Tag 0.7

Added `labels` to package definition

cmd/build.go

@@ -15,18 +15,17 @@
 package cmd
 
 import (
-	"fmt"
 	"io/ioutil"
 	"os"
 
 	"github.com/mudler/luet/pkg/compiler"
 	"github.com/mudler/luet/pkg/compiler/backend"
 	. "github.com/mudler/luet/pkg/config"
+	helpers "github.com/mudler/luet/pkg/helpers"
 	. "github.com/mudler/luet/pkg/logger"
 	pkg "github.com/mudler/luet/pkg/package"
 	tree "github.com/mudler/luet/pkg/tree"
 
-	_gentoo "github.com/Sabayon/pkgs-checker/pkg/gentoo"
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
 )
@@ -45,12 +44,16 @@ var buildCmd = &cobra.Command{
 		viper.BindPFlag("revdeps", cmd.Flags().Lookup("revdeps"))
 		viper.BindPFlag("all", cmd.Flags().Lookup("all"))
 		viper.BindPFlag("compression", cmd.Flags().Lookup("compression"))
+		viper.BindPFlag("nodeps", cmd.Flags().Lookup("nodeps"))
+		viper.BindPFlag("onlydeps", cmd.Flags().Lookup("onlydeps"))
 
 		viper.BindPFlag("image-repository", cmd.Flags().Lookup("image-repository"))
 		viper.BindPFlag("push", cmd.Flags().Lookup("push"))
 		viper.BindPFlag("pull", cmd.Flags().Lookup("pull"))
 		viper.BindPFlag("keep-images", cmd.Flags().Lookup("keep-images"))
 
+		LuetCfg.Viper.BindPFlag("keep-exported-images", cmd.Flags().Lookup("keep-exported-images"))
+
 		LuetCfg.Viper.BindPFlag("solver.type", cmd.Flags().Lookup("solver-type"))
 		LuetCfg.Viper.BindPFlag("solver.discount", cmd.Flags().Lookup("solver-discount"))
 		LuetCfg.Viper.BindPFlag("solver.rate", cmd.Flags().Lookup("solver-rate"))
@@ -72,6 +75,9 @@ var buildCmd = &cobra.Command{
 		push := viper.GetBool("push")
 		pull := viper.GetBool("pull")
 		keepImages := viper.GetBool("keep-images")
+		nodeps := viper.GetBool("nodeps")
+		onlydeps := viper.GetBool("onlydeps")
+		keepExportedImages := viper.GetBool("keep-exported-images")
 
 		compilerSpecs := compiler.NewLuetCompilationspecs()
 		var compilerBackend compiler.CompilerBackend
@@ -126,31 +132,21 @@ var buildCmd = &cobra.Command{
 		opts.PullFirst = pull
 		opts.KeepImg = keepImages
 		opts.Push = push
+		opts.OnlyDeps = onlydeps
+		opts.NoDeps = nodeps
+		opts.KeepImageExport = keepExportedImages
+
 		luetCompiler := compiler.NewLuetCompiler(compilerBackend, generalRecipe.GetDatabase(), opts)
 		luetCompiler.SetConcurrency(concurrency)
 		luetCompiler.SetCompressionType(compiler.CompressionImplementation(compressionType))
 		if !all {
 			for _, a := range args {
-				gp, err := _gentoo.ParsePackageStr(a)
+
+				pack, err := helpers.ParsePackageStr(a)
 				if err != nil {
 					Fatal("Invalid package string ", a, ": ", err.Error())
 				}
 
-				if gp.Version == "" {
-					gp.Version = "0"
-					gp.Condition = _gentoo.PkgCondGreaterEqual
-				}
-
-				pack := &pkg.DefaultPackage{
-					Name: gp.Name,
-					Version: fmt.Sprintf("%s%s%s",
-						pkg.PkgSelectorConditionFromInt(gp.Condition.Int()).String(),
-						gp.Version,
-						gp.VersionSuffix,
-					),
-					Category: gp.Category,
-					Uri:      make([]string, 0),
-				}
 				spec, err := luetCompiler.FromPackage(pack)
 				if err != nil {
 					Fatal("Error: " + err.Error())
@@ -212,6 +208,9 @@ func init() {
 	buildCmd.Flags().Bool("push", false, "Push images to a hub")
 	buildCmd.Flags().Bool("pull", false, "Pull images from a hub")
 	buildCmd.Flags().Bool("keep-images", true, "Keep built docker images in the host")
+	buildCmd.Flags().Bool("nodeps", false, "Build only the target packages, skipping deps (it works only if you already built the deps locally, or by using --pull) ")
+	buildCmd.Flags().Bool("onlydeps", false, "Build only package dependencies")
+	buildCmd.Flags().Bool("keep-exported-images", false, "Keep exported images used during building")
 
 	buildCmd.Flags().String("solver-type", "", "Solver strategy")
 	buildCmd.Flags().Float32("solver-rate", 0.7, "Solver learning rate")

cmd/install.go

@@ -15,17 +15,16 @@
 package cmd
 
 import (
-	"fmt"
 	"os"
 	"path/filepath"
 
 	installer "github.com/mudler/luet/pkg/installer"
 
 	. "github.com/mudler/luet/pkg/config"
+	helpers "github.com/mudler/luet/pkg/helpers"
 	. "github.com/mudler/luet/pkg/logger"
 	pkg "github.com/mudler/luet/pkg/package"
 
-	_gentoo "github.com/Sabayon/pkgs-checker/pkg/gentoo"
 	"github.com/spf13/cobra"
 )
 
@@ -39,6 +38,11 @@ var installCmd = &cobra.Command{
 		LuetCfg.Viper.BindPFlag("solver.discount", cmd.Flags().Lookup("solver-discount"))
 		LuetCfg.Viper.BindPFlag("solver.rate", cmd.Flags().Lookup("solver-rate"))
 		LuetCfg.Viper.BindPFlag("solver.max_attempts", cmd.Flags().Lookup("solver-attempts"))
+		LuetCfg.Viper.BindPFlag("onlydeps", cmd.Flags().Lookup("onlydeps"))
+		LuetCfg.Viper.BindPFlag("nodeps", cmd.Flags().Lookup("nodeps"))
+		LuetCfg.Viper.BindPFlag("force", cmd.Flags().Lookup("force"))
+		LuetCfg.Viper.BindPFlag("download-only", cmd.Flags().Lookup("download-only"))
+
 	},
 	Long: `Install packages in parallel`,
 	Run: func(cmd *cobra.Command, args []string) {
@@ -46,26 +50,10 @@ var installCmd = &cobra.Command{
 		var systemDB pkg.PackageDatabase
 
 		for _, a := range args {
-			gp, err := _gentoo.ParsePackageStr(a)
+			pack, err := helpers.ParsePackageStr(a)
 			if err != nil {
 				Fatal("Invalid package string ", a, ": ", err.Error())
 			}
-
-			if gp.Version == "" {
-				gp.Version = "0"
-				gp.Condition = _gentoo.PkgCondGreaterEqual
-			}
-
-			pack := &pkg.DefaultPackage{
-				Name: gp.Name,
-				Version: fmt.Sprintf("%s%s%s",
-					pkg.PkgSelectorConditionFromInt(gp.Condition.Int()).String(),
-					gp.Version,
-					gp.VersionSuffix,
-				),
-				Category: gp.Category,
-				Uri:      make([]string, 0),
-			}
 			toInstall = append(toInstall, pack)
 		}
 
@@ -83,7 +71,10 @@ var installCmd = &cobra.Command{
 		discount := LuetCfg.Viper.GetFloat64("solver.discount")
 		rate := LuetCfg.Viper.GetFloat64("solver.rate")
 		attempts := LuetCfg.Viper.GetInt("solver.max_attempts")
-
+		force := LuetCfg.Viper.GetBool("force")
+		nodeps := LuetCfg.Viper.GetBool("nodeps")
+		onlydeps := LuetCfg.Viper.GetBool("onlydeps")
+		downloadOnly := LuetCfg.Viper.GetBool("download-only")
 		LuetCfg.GetSolverOptions().Type = stype
 		LuetCfg.GetSolverOptions().LearnRate = float32(rate)
 		LuetCfg.GetSolverOptions().Discount = float32(discount)
@@ -91,7 +82,14 @@ var installCmd = &cobra.Command{
 
 		Debug("Solver", LuetCfg.GetSolverOptions().CompactString())
 
-		inst := installer.NewLuetInstaller(installer.LuetInstallerOptions{Concurrency: LuetCfg.GetGeneral().Concurrency, SolverOptions: *LuetCfg.GetSolverOptions()})
+		inst := installer.NewLuetInstaller(installer.LuetInstallerOptions{
+			Concurrency:                 LuetCfg.GetGeneral().Concurrency,
+			SolverOptions:               *LuetCfg.GetSolverOptions(),
+			NoDeps:                      nodeps,
+			Force:                       force,
+			OnlyDeps:                    onlydeps,
+			PreserveSystemEssentialData: true,
+		})
 		inst.Repositories(repos)
 
 		if LuetCfg.GetSystem().DatabaseEngine == "boltdb" {
@@ -101,7 +99,7 @@ var installCmd = &cobra.Command{
 			systemDB = pkg.NewInMemoryDatabase(true)
 		}
 		system := &installer.System{Database: systemDB, Target: LuetCfg.GetSystem().Rootfs}
-		err := inst.Install(toInstall, system)
+		err := inst.Install(toInstall, system, downloadOnly)
 		if err != nil {
 			Fatal("Error: " + err.Error())
 		}
@@ -119,6 +117,10 @@ func init() {
 	installCmd.Flags().Float32("solver-rate", 0.7, "Solver learning rate")
 	installCmd.Flags().Float32("solver-discount", 1.0, "Solver discount rate")
 	installCmd.Flags().Int("solver-attempts", 9000, "Solver maximum attempts")
+	installCmd.Flags().Bool("nodeps", false, "Don't consider package dependencies (harmful!)")
+	installCmd.Flags().Bool("onlydeps", false, "Consider **only** package dependencies")
+	installCmd.Flags().Bool("force", false, "Skip errors and keep going (potentially harmful)")
+	installCmd.Flags().Bool("download-only", false, "Download dependencies only")
 
 	RootCmd.AddCommand(installCmd)
 }

cmd/root.go

@@ -16,6 +16,7 @@
 package cmd
 
 import (
+	"fmt"
 	"os"
 	"os/user"
 	"path/filepath"
@@ -24,6 +25,7 @@ import (
 
 	"github.com/marcsauter/single"
 	config "github.com/mudler/luet/pkg/config"
+	helpers "github.com/mudler/luet/pkg/helpers"
 	. "github.com/mudler/luet/pkg/logger"
 	repo "github.com/mudler/luet/pkg/repository"
 
@@ -35,7 +37,7 @@ var cfgFile string
 var Verbose bool
 
 const (
-	LuetCLIVersion = "0.6"
+	LuetCLIVersion = "0.7"
 	LuetEnvPrefix  = "LUET"
 )
 
@@ -51,12 +53,13 @@ var RootCmd = &cobra.Command{
 			Fatal("failed to load configuration:", err.Error())
 		}
 	},
+	SilenceErrors: true,
 }
 
 func LoadConfig(c *config.LuetConfig) error {
 	// If a config file is found, read it in.
 	if err := c.Viper.ReadInConfig(); err != nil {
-		Warning(err)
+		Debug(err)
 	}
 
 	err := c.Viper.Unmarshal(&config.LuetCfg)
@@ -99,8 +102,18 @@ func Execute() {
 		}
 		defer s.TryUnlock()
 	}
+
 	if err := RootCmd.Execute(); err != nil {
-		Error(err)
+		if len(os.Args) > 0 {
+			for _, c := range RootCmd.Commands() {
+				if c.Name() == os.Args[1] {
+					os.Exit(-1) // Something failed
+				}
+			}
+			// Try to load a bin from path.
+			helpers.Exec("luet-"+os.Args[1], os.Args[1:], os.Environ())
+		}
+		fmt.Println(err)
 		os.Exit(-1)
 	}
 }
@@ -109,7 +122,7 @@ func init() {
 	cobra.OnInitialize(initConfig)
 	pflags := RootCmd.PersistentFlags()
 	pflags.StringVar(&cfgFile, "config", "", "config file (default is $HOME/.luet.yaml)")
-	pflags.BoolVarP(&Verbose, "verbose", "v", false, "verbose output")
+	pflags.BoolP("debug", "d", false, "verbose output")
 	pflags.Bool("fatal", false, "Enables Warnings to exit")
 
 	u, err := user.Current()
@@ -124,7 +137,7 @@ func init() {
 	pflags.Int("concurrency", runtime.NumCPU(), "Concurrency")
 
 	config.LuetCfg.Viper.BindPFlag("general.same_owner", pflags.Lookup("same-owner"))
-	config.LuetCfg.Viper.BindPFlag("general.debug", pflags.Lookup("verbose"))
+	config.LuetCfg.Viper.BindPFlag("general.debug", pflags.Lookup("debug"))
 	config.LuetCfg.Viper.BindPFlag("general.concurrency", pflags.Lookup("concurrency"))
 	config.LuetCfg.Viper.BindPFlag("general.fatal_warnings", pflags.Lookup("fatal"))
 }
@@ -141,7 +154,6 @@ func initConfig() {
 	viper.SetConfigType("yaml")
 	viper.SetConfigName(".luet") // name of config file (without extension)
 	if cfgFile != "" {           // enable ability to specify config file via flag
-		Info(">>> cfgFile: ", cfgFile)
 		viper.SetConfigFile(cfgFile)
 	} else {
 		viper.AddConfigPath(dir)

cmd/search.go

@@ -17,7 +17,6 @@ package cmd
 import (
 	"os"
 	"path/filepath"
-	"regexp"
 
 	. "github.com/mudler/luet/pkg/config"
 	installer "github.com/mudler/luet/pkg/installer"
@@ -51,6 +50,8 @@ var searchCmd = &cobra.Command{
 		discount := LuetCfg.Viper.GetFloat64("solver.discount")
 		rate := LuetCfg.Viper.GetFloat64("solver.rate")
 		attempts := LuetCfg.Viper.GetInt("solver.max_attempts")
+		searchWithLabel, _ := cmd.Flags().GetBool("by-label")
+		searchWithLabelMatch, _ := cmd.Flags().GetBool("by-label-regex")
 
 		LuetCfg.GetSolverOptions().Type = stype
 		LuetCfg.GetSolverOptions().LearnRate = float32(rate)
@@ -70,8 +71,12 @@ var searchCmd = &cobra.Command{
 				repos = append(repos, r)
 			}
 
-			inst := installer.NewLuetInstaller(installer.LuetInstallerOptions{Concurrency: LuetCfg.GetGeneral().Concurrency, SolverOptions: *LuetCfg.GetSolverOptions()})
-
+			inst := installer.NewLuetInstaller(
+				installer.LuetInstallerOptions{
+					Concurrency:   LuetCfg.GetGeneral().Concurrency,
+					SolverOptions: *LuetCfg.GetSolverOptions(),
+				},
+			)
 			inst.Repositories(repos)
 			synced, err := inst.SyncRepositories(false)
 			if err != nil {
@@ -80,7 +85,14 @@ var searchCmd = &cobra.Command{
 
 			Info("--- Search results: ---")
 
-			matches := synced.Search(args[0])
+			matches := []installer.PackageMatch{}
+			if searchWithLabel {
+				matches = synced.SearchLabel(args[0])
+			} else if searchWithLabelMatch {
+				matches = synced.SearchLabelMatch(args[0])
+			} else {
+				matches = synced.Search(args[0])
+			}
 			for _, m := range matches {
 				Info(":package:", m.Package.GetCategory(), m.Package.GetName(),
 					m.Package.GetVersion(), "repository:", m.Repo.GetName())
@@ -94,14 +106,25 @@ var searchCmd = &cobra.Command{
 				systemDB = pkg.NewInMemoryDatabase(true)
 			}
 			system := &installer.System{Database: systemDB, Target: LuetCfg.GetSystem().Rootfs}
-			var term = regexp.MustCompile(args[0])
 
-			for _, k := range system.Database.GetPackages() {
-				pack, err := system.Database.GetPackage(k)
-				if err == nil && term.MatchString(pack.GetName()) {
-					Info(":package:", pack.GetCategory(), pack.GetName(), pack.GetVersion())
-				}
+			var err error
+			iMatches := []pkg.Package{}
+			if searchWithLabel {
+				iMatches, err = system.Database.FindPackageLabel(args[0])
+			} else if searchWithLabelMatch {
+				iMatches, err = system.Database.FindPackageLabelMatch(args[0])
+			} else {
+				iMatches, err = system.Database.FindPackageMatch(args[0])
 			}
+
+			if err != nil {
+				Fatal("Error: " + err.Error())
+			}
+
+			for _, pack := range iMatches {
+				Info(":package:", pack.GetCategory(), pack.GetName(), pack.GetVersion())
+			}
+
 		}
 
 	},
@@ -119,5 +142,7 @@ func init() {
 	searchCmd.Flags().Float32("solver-rate", 0.7, "Solver learning rate")
 	searchCmd.Flags().Float32("solver-discount", 1.0, "Solver discount rate")
 	searchCmd.Flags().Int("solver-attempts", 9000, "Solver maximum attempts")
+	searchCmd.Flags().Bool("by-label", false, "Search packages through label")
+	searchCmd.Flags().Bool("by-label-regex", false, "Search packages through label regex")
 	RootCmd.AddCommand(searchCmd)
 }

cmd/tree.go

@@ -0,0 +1,38 @@
+// Copyright © 2020 Ettore Di Giacinto <mudler@gentoo.org>
+//                  Daniele Rondina <geaaru@sabayonlinux.org>
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program; if not, see <http://www.gnu.org/licenses/>.
+
+package cmd
+
+import (
+	. "github.com/mudler/luet/cmd/tree"
+
+	"github.com/spf13/cobra"
+)
+
+var treeGroupCmd = &cobra.Command{
+	Use:   "tree [command] [OPTIONS]",
+	Short: "Tree operations",
+}
+
+func init() {
+	RootCmd.AddCommand(treeGroupCmd)
+
+	treeGroupCmd.AddCommand(
+		NewTreePkglistCommand(),
+		NewTreeValidateCommand(),
+		NewTreeBumpCommand(),
+	)
+}

cmd/tree/bump.go

@@ -0,0 +1,67 @@
+// Copyright © 2020 Ettore Di Giacinto <mudler@gentoo.org>
+//                  Daniele Rondina <geaaru@sabayonlinux.org>
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program; if not, see <http://www.gnu.org/licenses/>.
+
+package cmd_tree
+
+import (
+	"fmt"
+	//"os"
+	//"sort"
+
+	. "github.com/mudler/luet/pkg/logger"
+	tree "github.com/mudler/luet/pkg/tree"
+
+	"github.com/spf13/cobra"
+)
+
+func NewTreeBumpCommand() *cobra.Command {
+
+	var ans = &cobra.Command{
+		Use:   "bump [OPTIONS]",
+		Short: "Bump a new package build version.",
+		Args:  cobra.OnlyValidArgs,
+		PreRun: func(cmd *cobra.Command, args []string) {
+			df, _ := cmd.Flags().GetString("definition-file")
+			if df == "" {
+				Fatal("Mandatory definition.yaml path missing.")
+			}
+		},
+		Run: func(cmd *cobra.Command, args []string) {
+			spec, _ := cmd.Flags().GetString("definition-file")
+			pack, err := tree.ReadDefinitionFile(spec)
+			if err != nil {
+				Fatal(err.Error())
+			}
+
+			// Retrieve version build section with Gentoo parser
+			err = pack.BumpBuildVersion()
+			if err != nil {
+				Fatal("Error on increment build version: " + err.Error())
+			}
+
+			err = tree.WriteDefinitionFile(&pack, spec)
+			if err != nil {
+				Fatal("Error on write definition file: " + err.Error())
+			}
+
+			fmt.Printf("Bumped package %s/%s-%s.\n", pack.Category, pack.Name, pack.Version)
+		},
+	}
+
+	ans.Flags().StringP("definition-file", "f", "", "Path of the definition to bump.")
+
+	return ans
+}

cmd/tree/pkglist.go

@@ -0,0 +1,140 @@
+// Copyright © 2020 Ettore Di Giacinto <mudler@gentoo.org>
+//                  Daniele Rondina <geaaru@sabayonlinux.org>
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program; if not, see <http://www.gnu.org/licenses/>.
+
+package cmd_tree
+
+import (
+	"fmt"
+	"sort"
+
+	//. "github.com/mudler/luet/pkg/config"
+	helpers "github.com/mudler/luet/pkg/helpers"
+	. "github.com/mudler/luet/pkg/logger"
+	pkg "github.com/mudler/luet/pkg/package"
+	tree "github.com/mudler/luet/pkg/tree"
+
+	"github.com/spf13/cobra"
+)
+
+func pkgDetail(pkg pkg.Package) string {
+	ans := fmt.Sprintf(`
+  @@ Package: %s/%s-%s
+     Description: %s
+     License:     %s`,
+		pkg.GetCategory(), pkg.GetName(), pkg.GetVersion(),
+		pkg.GetDescription(), pkg.GetLicense())
+
+	for idx, u := range pkg.GetURI() {
+		if idx == 0 {
+			ans += fmt.Sprintf("     URLs:        %s", u)
+		} else {
+			ans += fmt.Sprintf("                  %s", u)
+		}
+	}
+
+	return ans
+}
+
+func NewTreePkglistCommand() *cobra.Command {
+	var excludes []string
+	var matches []string
+
+	var ans = &cobra.Command{
+		Use:   "pkglist [OPTIONS]",
+		Short: "List of the packages found in tree.",
+		Args:  cobra.OnlyValidArgs,
+		PreRun: func(cmd *cobra.Command, args []string) {
+			t, _ := cmd.Flags().GetString("tree")
+			if t == "" {
+				Fatal("Mandatory tree param missing.")
+			}
+		},
+		Run: func(cmd *cobra.Command, args []string) {
+
+			treePath, _ := cmd.Flags().GetString("tree")
+			verbose, _ := cmd.Flags().GetBool("verbose")
+			full, _ := cmd.Flags().GetBool("full")
+			reciper := tree.NewInstallerRecipe(pkg.NewInMemoryDatabase(false))
+			err := reciper.Load(treePath)
+			if err != nil {
+				Fatal("Error on load tree ", err)
+			}
+
+			regExcludes, err := helpers.CreateRegexArray(excludes)
+			if err != nil {
+				Fatal(err.Error())
+			}
+			regMatches, err := helpers.CreateRegexArray(matches)
+			if err != nil {
+				Fatal(err.Error())
+			}
+
+			plist := make([]string, 0)
+			for _, p := range reciper.GetDatabase().World() {
+				pkgstr := ""
+				addPkg := true
+				if full {
+					pkgstr = pkgDetail(p)
+				} else if verbose {
+					pkgstr = fmt.Sprintf("%s/%s-%s", p.GetCategory(), p.GetName(), p.GetVersion())
+				} else {
+					pkgstr = fmt.Sprintf("%s/%s", p.GetCategory(), p.GetName())
+				}
+
+				if len(matches) > 0 {
+					matched := false
+					for _, rgx := range regMatches {
+						if rgx.MatchString(pkgstr) {
+							matched = true
+							break
+						}
+					}
+					if !matched {
+						addPkg = false
+					}
+				}
+
+				if len(excludes) > 0 && addPkg {
+					for _, rgx := range regExcludes {
+						if rgx.MatchString(pkgstr) {
+							addPkg = false
+							break
+						}
+					}
+				}
+
+				if addPkg {
+					plist = append(plist, pkgstr)
+				}
+			}
+
+			sort.Strings(plist)
+			for _, p := range plist {
+				fmt.Println(p)
+			}
+		},
+	}
+
+	ans.Flags().BoolP("verbose", "v", false, "Add package version")
+	ans.Flags().BoolP("full", "f", false, "Show package detail")
+	ans.Flags().StringP("tree", "t", "", "Path of the tree to use.")
+	ans.Flags().StringSliceVarP(&matches, "matches", "m", []string{},
+		"Include only matched packages from list. (Use string as regex).")
+	ans.Flags().StringSliceVarP(&excludes, "exclude", "e", []string{},
+		"Exclude matched packages from list. (Use string as regex).")
+
+	return ans
+}

cmd/tree/validate.go

@@ -0,0 +1,212 @@
+// Copyright © 2020 Ettore Di Giacinto <mudler@gentoo.org>
+//                  Daniele Rondina <geaaru@sabayonlinux.org>
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program; if not, see <http://www.gnu.org/licenses/>.
+
+package cmd_tree
+
+import (
+	"fmt"
+	"os"
+	"sort"
+
+	//. "github.com/mudler/luet/pkg/config"
+	helpers "github.com/mudler/luet/pkg/helpers"
+	. "github.com/mudler/luet/pkg/logger"
+	pkg "github.com/mudler/luet/pkg/package"
+	"github.com/mudler/luet/pkg/solver"
+	tree "github.com/mudler/luet/pkg/tree"
+
+	"github.com/spf13/cobra"
+)
+
+func NewTreeValidateCommand() *cobra.Command {
+	var excludes []string
+	var matches []string
+	var treePaths []string
+
+	var ans = &cobra.Command{
+		Use:   "validate [OPTIONS]",
+		Short: "Validate a tree or a list of packages",
+		Args:  cobra.OnlyValidArgs,
+		PreRun: func(cmd *cobra.Command, args []string) {
+			if len(treePaths) < 1 {
+				Fatal("Mandatory tree param missing.")
+			}
+		},
+		Run: func(cmd *cobra.Command, args []string) {
+			var depSolver solver.PackageSolver
+			var errstr string
+
+			errors := make([]string, 0)
+
+			brokenPkgs := 0
+			brokenDeps := 0
+			withSolver, _ := cmd.Flags().GetBool("with-solver")
+
+			reciper := tree.NewInstallerRecipe(pkg.NewInMemoryDatabase(false))
+			for _, treePath := range treePaths {
+				err := reciper.Load(treePath)
+				if err != nil {
+					Fatal("Error on load tree ", err)
+				}
+			}
+
+			emptyInstallationDb := pkg.NewInMemoryDatabase(false)
+			if withSolver {
+				depSolver = solver.NewSolver(pkg.NewInMemoryDatabase(false),
+					reciper.GetDatabase(),
+					emptyInstallationDb)
+			}
+
+			regExcludes, err := helpers.CreateRegexArray(excludes)
+			if err != nil {
+				Fatal(err.Error())
+			}
+			regMatches, err := helpers.CreateRegexArray(matches)
+			if err != nil {
+				Fatal(err.Error())
+			}
+
+			for _, p := range reciper.GetDatabase().World() {
+
+				pkgstr := fmt.Sprintf("%s/%s-%s", p.GetCategory(), p.GetName(),
+					p.GetVersion())
+
+				validpkg := true
+
+				if len(matches) > 0 {
+					matched := false
+					for _, rgx := range regMatches {
+						if rgx.MatchString(pkgstr) {
+							matched = true
+							break
+						}
+					}
+
+					if !matched {
+						continue
+					}
+				}
+
+				if len(excludes) > 0 {
+					excluded := false
+					for _, rgx := range regExcludes {
+						if rgx.MatchString(pkgstr) {
+							excluded = true
+							break
+						}
+					}
+
+					if excluded {
+						continue
+					}
+				}
+				Info("Checking package "+fmt.Sprintf("%s/%s-%s", p.GetCategory(), p.GetName(), p.GetVersion()), "with", len(p.GetRequires()), "dependencies.")
+
+				for _, r := range p.GetRequires() {
+
+					deps, err := reciper.GetDatabase().FindPackages(
+						&pkg.DefaultPackage{
+							Name:     r.GetName(),
+							Category: r.GetCategory(),
+							Version:  r.GetVersion(),
+						},
+					)
+
+					if err != nil || len(deps) < 1 {
+						if err != nil {
+							errstr = err.Error()
+						} else {
+							errstr = "No packages"
+						}
+						Error(fmt.Sprintf("%s/%s-%s: Broken Dep %s/%s-%s - %s",
+							p.GetCategory(), p.GetName(), p.GetVersion(),
+							r.GetCategory(), r.GetName(), r.GetVersion(),
+							errstr,
+						))
+
+						errors = append(errors,
+							fmt.Sprintf("%s/%s-%s: Broken Dep %s/%s-%s - %s",
+								p.GetCategory(), p.GetName(), p.GetVersion(),
+								r.GetCategory(), r.GetName(), r.GetVersion(),
+								errstr))
+
+						brokenDeps++
+
+						validpkg = false
+
+					} else {
+
+						Debug("Find packages for dep",
+							fmt.Sprintf("%s/%s-%s", r.GetCategory(), r.GetName(), r.GetVersion()))
+
+						if withSolver {
+							Spinner(32)
+							_, err := depSolver.Install([]pkg.Package{r})
+							SpinnerStop()
+
+							if err != nil {
+
+								Error(fmt.Sprintf("%s/%s-%s: solver broken for dep %s/%s-%s - %s",
+									p.GetCategory(), p.GetName(), p.GetVersion(),
+									r.GetCategory(), r.GetName(), r.GetVersion(),
+									err.Error(),
+								))
+
+								errors = append(errors,
+									fmt.Sprintf("%s/%s-%s: solver broken for Dep %s/%s-%s - %s",
+										p.GetCategory(), p.GetName(), p.GetVersion(),
+										r.GetCategory(), r.GetName(), r.GetVersion(),
+										err.Error()))
+
+								brokenDeps++
+								validpkg = false
+							}
+
+						}
+					}
+
+				}
+
+				if !validpkg {
+					brokenPkgs++
+				}
+			}
+
+			sort.Strings(errors)
+			for _, e := range errors {
+				fmt.Println(e)
+			}
+			fmt.Println("Broken packages:", brokenPkgs, "(", brokenDeps, "deps ).")
+
+			if brokenPkgs > 0 {
+				os.Exit(1)
+			} else {
+				os.Exit(0)
+			}
+		},
+	}
+
+	ans.Flags().BoolP("with-solver", "s", false,
+		"Enable check of requires also with solver.")
+	ans.Flags().StringSliceVarP(&treePaths, "tree", "t", []string{},
+		"Path of the tree to use.")
+	ans.Flags().StringSliceVarP(&excludes, "exclude", "e", []string{},
+		"Exclude matched packages from analysis. (Use string as regex).")
+	ans.Flags().StringSliceVarP(&matches, "matches", "m", []string{},
+		"Analyze only matched packages. (Use string as regex).")
+
+	return ans
+}

cmd/uninstall.go

@@ -15,16 +15,15 @@
 package cmd
 
 import (
-	"fmt"
 	"os"
 	"path/filepath"
 
 	. "github.com/mudler/luet/pkg/config"
+	helpers "github.com/mudler/luet/pkg/helpers"
 	installer "github.com/mudler/luet/pkg/installer"
 	. "github.com/mudler/luet/pkg/logger"
 	pkg "github.com/mudler/luet/pkg/package"
 
-	_gentoo "github.com/Sabayon/pkgs-checker/pkg/gentoo"
 	"github.com/spf13/cobra"
 )
 
@@ -39,34 +38,25 @@ var uninstallCmd = &cobra.Command{
 		LuetCfg.Viper.BindPFlag("solver.discount", cmd.Flags().Lookup("solver-discount"))
 		LuetCfg.Viper.BindPFlag("solver.rate", cmd.Flags().Lookup("solver-rate"))
 		LuetCfg.Viper.BindPFlag("solver.max_attempts", cmd.Flags().Lookup("solver-attempts"))
+		LuetCfg.Viper.BindPFlag("nodeps", cmd.Flags().Lookup("nodeps"))
+		LuetCfg.Viper.BindPFlag("force", cmd.Flags().Lookup("force"))
 	},
 	Run: func(cmd *cobra.Command, args []string) {
 		var systemDB pkg.PackageDatabase
 
 		for _, a := range args {
-			gp, err := _gentoo.ParsePackageStr(a)
+
+			pack, err := helpers.ParsePackageStr(a)
 			if err != nil {
 				Fatal("Invalid package string ", a, ": ", err.Error())
 			}
-			if gp.Version == "" {
-				gp.Version = "0"
-				gp.Condition = _gentoo.PkgCondGreaterEqual
-			}
-			pack := &pkg.DefaultPackage{
-				Name: gp.Name,
-				Version: fmt.Sprintf("%s%s%s",
-					pkg.PkgSelectorConditionFromInt(gp.Condition.Int()).String(),
-					gp.Version,
-					gp.VersionSuffix,
-				),
-				Category: gp.Category,
-				Uri:      make([]string, 0),
-			}
 
 			stype := LuetCfg.Viper.GetString("solver.type")
 			discount := LuetCfg.Viper.GetFloat64("solver.discount")
 			rate := LuetCfg.Viper.GetFloat64("solver.rate")
 			attempts := LuetCfg.Viper.GetInt("solver.max_attempts")
+			force := LuetCfg.Viper.GetBool("force")
+			nodeps := LuetCfg.Viper.GetBool("nodeps")
 
 			LuetCfg.GetSolverOptions().Type = stype
 			LuetCfg.GetSolverOptions().LearnRate = float32(rate)
@@ -75,7 +65,12 @@ var uninstallCmd = &cobra.Command{
 
 			Debug("Solver", LuetCfg.GetSolverOptions().CompactString())
 
-			inst := installer.NewLuetInstaller(installer.LuetInstallerOptions{Concurrency: LuetCfg.GetGeneral().Concurrency, SolverOptions: *LuetCfg.GetSolverOptions()})
+			inst := installer.NewLuetInstaller(installer.LuetInstallerOptions{
+				Concurrency:   LuetCfg.GetGeneral().Concurrency,
+				SolverOptions: *LuetCfg.GetSolverOptions(),
+				NoDeps:        nodeps,
+				Force:         force,
+			})
 
 			if LuetCfg.GetSystem().DatabaseEngine == "boltdb" {
 				systemDB = pkg.NewBoltDatabase(
@@ -103,5 +98,8 @@ func init() {
 	uninstallCmd.Flags().Float32("solver-rate", 0.7, "Solver learning rate")
 	uninstallCmd.Flags().Float32("solver-discount", 1.0, "Solver discount rate")
 	uninstallCmd.Flags().Int("solver-attempts", 9000, "Solver maximum attempts")
+	uninstallCmd.Flags().Bool("nodeps", false, "Don't consider package dependencies (harmful!)")
+	uninstallCmd.Flags().Bool("force", false, "Force uninstall")
+
 	RootCmd.AddCommand(uninstallCmd)
 }

cmd/upgrade.go

@@ -36,6 +36,7 @@ var upgradeCmd = &cobra.Command{
 		LuetCfg.Viper.BindPFlag("solver.discount", cmd.Flags().Lookup("solver-discount"))
 		LuetCfg.Viper.BindPFlag("solver.rate", cmd.Flags().Lookup("solver-rate"))
 		LuetCfg.Viper.BindPFlag("solver.max_attempts", cmd.Flags().Lookup("solver-attempts"))
+		LuetCfg.Viper.BindPFlag("force", cmd.Flags().Lookup("force"))
 	},
 	Long: `Upgrades packages in parallel`,
 	Run: func(cmd *cobra.Command, args []string) {
@@ -55,6 +56,7 @@ var upgradeCmd = &cobra.Command{
 		discount := LuetCfg.Viper.GetFloat64("solver.discount")
 		rate := LuetCfg.Viper.GetFloat64("solver.rate")
 		attempts := LuetCfg.Viper.GetInt("solver.max_attempts")
+		force := LuetCfg.Viper.GetBool("force")
 
 		LuetCfg.GetSolverOptions().Type = stype
 		LuetCfg.GetSolverOptions().LearnRate = float32(rate)
@@ -63,7 +65,11 @@ var upgradeCmd = &cobra.Command{
 
 		Debug("Solver", LuetCfg.GetSolverOptions().String())
 
-		inst := installer.NewLuetInstaller(installer.LuetInstallerOptions{Concurrency: LuetCfg.GetGeneral().Concurrency, SolverOptions: *LuetCfg.GetSolverOptions()})
+		inst := installer.NewLuetInstaller(installer.LuetInstallerOptions{
+			Concurrency:   LuetCfg.GetGeneral().Concurrency,
+			SolverOptions: *LuetCfg.GetSolverOptions(),
+			Force:         force,
+		})
 		inst.Repositories(repos)
 		_, err := inst.SyncRepositories(false)
 		if err != nil {
@@ -95,5 +101,7 @@ func init() {
 	upgradeCmd.Flags().Float32("solver-rate", 0.7, "Solver learning rate")
 	upgradeCmd.Flags().Float32("solver-discount", 1.0, "Solver discount rate")
 	upgradeCmd.Flags().Int("solver-attempts", 9000, "Solver maximum attempts")
+	upgradeCmd.Flags().Bool("force", false, "Force upgrade by ignoring errors")
+
 	RootCmd.AddCommand(upgradeCmd)
 }

go.mod

@@ -4,7 +4,8 @@ go 1.12
 
 require (
 	github.com/DataDog/zstd v1.4.4 // indirect
-	github.com/Sabayon/pkgs-checker v0.4.2-0.20200101193228-1d500105afb7
+	github.com/MottainaiCI/simplestreams-builder v0.0.0-20190710131531-efb382161f56 // indirect
+	github.com/Sabayon/pkgs-checker v0.6.2-0.20200315232328-b6efed54b4b1
 	github.com/asdine/storm v0.0.0-20190418133842-e0f77eada154
 	github.com/briandowns/spinner v1.7.0
 	github.com/cavaliercoder/grab v2.0.0+incompatible
@@ -12,6 +13,7 @@ require (
 	github.com/docker/docker v0.7.3-0.20180827131323-0c5f8d2b9b23
 	github.com/ecooper/qlearning v0.0.0-20160612200101-3075011a69fd
 	github.com/ghodss/yaml v1.0.0
+	github.com/go-yaml/yaml v2.1.0+incompatible // indirect
 	github.com/hashicorp/go-version v1.2.0
 	github.com/jinzhu/copier v0.0.0-20180308034124-7e38e58719c3
 	github.com/klauspost/pgzip v1.2.1
@@ -20,6 +22,7 @@ require (
 	github.com/logrusorgru/aurora v0.0.0-20190417123914-21d75270181e
 	github.com/marcsauter/single v0.0.0-20181104081128-f8bf46f26ec0
 	github.com/mattn/go-isatty v0.0.10 // indirect
+	github.com/mattn/go-sqlite3 v2.0.3+incompatible // indirect
 	github.com/mudler/docker-companion v0.4.6-0.20191110154655-b8b364100616
 	github.com/onsi/ginkgo v1.10.1
 	github.com/onsi/gomega v1.7.0

go.sum

@@ -9,11 +9,24 @@ github.com/Microsoft/go-winio v0.4.11 h1:zoIOcVf0xPN1tnMVbTtEdI+P8OofVk3NObnwOQ6
 github.com/Microsoft/go-winio v0.4.11/go.mod h1:VhR8bwka0BXejwEJY73c50VrPtXAaKcyvVC4A4RozmA=
 github.com/Microsoft/hcsshim v0.8.6 h1:ZfF0+zZeYdzMIVMZHKtDKJvLHj76XCuVae/jNkjj0IA=
 github.com/Microsoft/hcsshim v0.8.6/go.mod h1:Op3hHsoHPAvb6lceZHDtd9OkTew38wNoXnJs8iY7rUg=
+github.com/MottainaiCI/simplestreams-builder v0.0.0-20190710131531-efb382161f56 h1:XCZM9J5KqLsr5NqtrZuXiD3X5fe5IfgU7IIUZzpeFBk=
+github.com/MottainaiCI/simplestreams-builder v0.0.0-20190710131531-efb382161f56/go.mod h1:+Gbv6dg6TPHWq4oDjZY1vn978PLCEZ2hOu8kvn+S7t4=
 github.com/Nvveen/Gotty v0.0.0-20120604004816-cd527374f1e5 h1:TngWCqHvy9oXAN6lEVMRuU21PR1EtLVZJmdB18Gu3Rw=
 github.com/Nvveen/Gotty v0.0.0-20120604004816-cd527374f1e5/go.mod h1:lmUJ/7eu/Q8D7ML55dXQrVaamCz2vxCfdQBasLZfHKk=
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
 github.com/Sabayon/pkgs-checker v0.4.2-0.20200101193228-1d500105afb7 h1:Vf80sSLu1ZWjjMmUKhw0FqM43lEOvT8O5B22NaHB6AQ=
 github.com/Sabayon/pkgs-checker v0.4.2-0.20200101193228-1d500105afb7/go.mod h1:GFGM6ZzSE5owdGgjLnulj0+Vt9UTd5LFGmB2AOVPYrE=
+github.com/Sabayon/pkgs-checker v0.5.0 h1:VRyyAxo6ox41Dytyl+K+QC+Tps0IxvqYbidu+AH+HUQ=
+github.com/Sabayon/pkgs-checker v0.5.1-0.20200221202320-073693f2c657 h1:VK5S2Gh9kPUxX81zCFUgKVQn+hFy6VgyZMD3QLm76u8=
+github.com/Sabayon/pkgs-checker v0.5.1-0.20200221202320-073693f2c657/go.mod h1:GFGM6ZzSE5owdGgjLnulj0+Vt9UTd5LFGmB2AOVPYrE=
+github.com/Sabayon/pkgs-checker v0.6.1 h1:7HIrrAQujfEQ0+vPjb1Px4AdUY7KWQPn8W0NjKMoGLI=
+github.com/Sabayon/pkgs-checker v0.6.1/go.mod h1:GFGM6ZzSE5owdGgjLnulj0+Vt9UTd5LFGmB2AOVPYrE=
+github.com/Sabayon/pkgs-checker v0.6.2-0.20200310081024-935615ba9d27 h1:+5UCxj8bQHrcjuZumsX+E4mvol2F2dW8lXb1K+A/VlM=
+github.com/Sabayon/pkgs-checker v0.6.2-0.20200310081024-935615ba9d27/go.mod h1:GFGM6ZzSE5owdGgjLnulj0+Vt9UTd5LFGmB2AOVPYrE=
+github.com/Sabayon/pkgs-checker v0.6.2-0.20200311072754-f4e0aec412f0 h1:C8pSo4uPvXcb5X2ai5oxuABdsOI1mlNNBaw2oxLbzy4=
+github.com/Sabayon/pkgs-checker v0.6.2-0.20200311072754-f4e0aec412f0/go.mod h1:GFGM6ZzSE5owdGgjLnulj0+Vt9UTd5LFGmB2AOVPYrE=
+github.com/Sabayon/pkgs-checker v0.6.2-0.20200315232328-b6efed54b4b1 h1:0hkt4Na3ZDZO6e9hCKATOki+zBKOdRa0LxUtYlm9oyE=
+github.com/Sabayon/pkgs-checker v0.6.2-0.20200315232328-b6efed54b4b1/go.mod h1:GFGM6ZzSE5owdGgjLnulj0+Vt9UTd5LFGmB2AOVPYrE=
 github.com/Sereal/Sereal v0.0.0-20181211220259-509a78ddbda3 h1:Xu7z47ZiE/J+sKXHZMGxEor/oY2q6dq51fkO0JqdSwY=
 github.com/Sereal/Sereal v0.0.0-20181211220259-509a78ddbda3/go.mod h1:D0JMgToj/WdxCgd30Kc1UcA9E+WdZoJqeVOuYW7iTBM=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
@@ -91,6 +104,8 @@ github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2
 github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
 github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
 github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
+github.com/go-yaml/yaml v2.1.0+incompatible h1:RYi2hDdss1u4YE7GwixGzWwVo47T8UQwnTLB6vQiq+o=
+github.com/go-yaml/yaml v2.1.0+incompatible/go.mod h1:w2MrLa16VYP0jy6N7M5kHaCkaLENm+P+Tv+MfurjSw0=
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
 github.com/gogo/protobuf v1.2.0/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
 github.com/gogo/protobuf v1.2.1 h1:/s5zKNz0uPFCZ5hddgPdo2TK2TVrUNMn0OOX8/aZMTE=
@@ -170,6 +185,8 @@ github.com/mattn/go-isatty v0.0.8/go.mod h1:Iq45c/XA43vh69/j3iqttzPXn0bhXyGjM0Hd
 github.com/mattn/go-isatty v0.0.9/go.mod h1:YNRxwqDuOph6SZLI9vUUz6OYw3QyUt7WiY2yME+cCiQ=
 github.com/mattn/go-isatty v0.0.10 h1:qxFzApOv4WsAL965uUPIsXzAKCZxN2p9UqdhFS4ZW10=
 github.com/mattn/go-isatty v0.0.10/go.mod h1:qgIWMr58cqv1PHHyhnkY9lrL7etaEgOFcMEpPG5Rm84=
+github.com/mattn/go-sqlite3 v2.0.3+incompatible h1:gXHsfypPkaMZrKbD5209QV9jbUTJKjyR5WD3HYQSd+U=
+github.com/mattn/go-sqlite3 v2.0.3+incompatible/go.mod h1:FPy6KqzDD04eiIsT53CuJW3U88zkxoIYsOqkbpncsNc=
 github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
 github.com/mgutz/ansi v0.0.0-20170206155736-9520e82c474b/go.mod h1:01TrycV0kFyexm33Z7vhZRXopbI8J3TDReVlkTgMUxE=
 github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=

pkg/compiler/compiler.go

@@ -265,17 +265,12 @@ func (cs *LuetCompiler) compileWithImage(image, buildertaggedImage, packageImage
 		}
 	}
 
+	fp := p.GetPackage().HashFingerprint()
 	if buildertaggedImage == "" {
-		buildertaggedImage = cs.ImageRepository + "-" + p.GetPackage().GetFingerPrint() + "-builder"
+		buildertaggedImage = cs.ImageRepository + "-" + fp + "-builder"
 	}
 	if packageImage == "" {
-		packageImage = cs.ImageRepository + "-" + p.GetPackage().GetFingerPrint()
-	}
-
-	if cs.Options.PullFirst {
-		//Best effort pull
-		cs.Backend.DownloadImage(CompilerBackendOptions{ImageName: buildertaggedImage})
-		cs.Backend.DownloadImage(CompilerBackendOptions{ImageName: packageImage})
+		packageImage = cs.ImageRepository + "-" + fp
 	}
 
 	Info(pkgTag, "Generating :whale: definition for builder image from", image)
@@ -289,19 +284,29 @@ func (cs *LuetCompiler) compileWithImage(image, buildertaggedImage, packageImage
 		Destination:    p.Rel(p.GetPackage().GetFingerPrint() + "-builder.image.tar"),
 	}
 
-	err = cs.Backend.BuildImage(builderOpts)
-	if err != nil {
-		return nil, errors.Wrap(err, "Could not build image: "+image+" "+builderOpts.DockerFileName)
+	buildBuilderImage := true
+	if cs.Options.PullFirst {
+		if err := cs.Backend.DownloadImage(builderOpts); err == nil {
+			buildBuilderImage = false
+		}
 	}
 
-	err = cs.Backend.ExportImage(builderOpts)
-	if err != nil {
+	if buildBuilderImage {
+		if err = cs.Backend.BuildImage(builderOpts); err != nil {
+			return nil, errors.Wrap(err, "Could not build image: "+image+" "+builderOpts.DockerFileName)
+		}
+	}
+
+	if err = cs.Backend.ExportImage(builderOpts); err != nil {
 		return nil, errors.Wrap(err, "Could not export image")
 	}
 
-	if cs.Options.Push {
-		err = cs.Backend.Push(builderOpts)
-		if err != nil {
+	if !cs.Options.KeepImageExport {
+		defer os.Remove(builderOpts.Destination)
+	}
+
+	if cs.Options.Push && buildBuilderImage {
+		if err = cs.Backend.Push(builderOpts); err != nil {
 			return nil, errors.Wrap(err, "Could not push image: "+image+" "+builderOpts.DockerFileName)
 		}
 	}
@@ -320,14 +325,29 @@ func (cs *LuetCompiler) compileWithImage(image, buildertaggedImage, packageImage
 	// 		return nil, errors.Wrap(err, "Could not export image to tar")
 	// 	}
 	// } else {
-	if err := cs.Backend.BuildImage(runnerOpts); err != nil {
-		return nil, errors.Wrap(err, "Failed building image for "+runnerOpts.ImageName+" "+runnerOpts.DockerFileName)
+	buildPackageImage := true
+	if cs.Options.PullFirst {
+		//Best effort pull
+		if err := cs.Backend.DownloadImage(runnerOpts); err == nil {
+			buildPackageImage = false
+		}
 	}
+
+	if buildPackageImage {
+		if err := cs.Backend.BuildImage(runnerOpts); err != nil {
+			return nil, errors.Wrap(err, "Failed building image for "+runnerOpts.ImageName+" "+runnerOpts.DockerFileName)
+		}
+	}
+
 	if err := cs.Backend.ExportImage(runnerOpts); err != nil {
 		return nil, errors.Wrap(err, "Failed exporting image")
 	}
 
-	if cs.Options.Push {
+	if !cs.Options.KeepImageExport {
+		defer os.Remove(runnerOpts.Destination)
+	}
+
+	if cs.Options.Push && buildPackageImage {
 		err = cs.Backend.Push(runnerOpts)
 		if err != nil {
 			return nil, errors.Wrap(err, "Could not push image: "+image+" "+builderOpts.DockerFileName)
@@ -409,85 +429,13 @@ func (cs *LuetCompiler) compileWithImage(image, buildertaggedImage, packageImage
 	return artifact, nil
 }
 
-func (cs *LuetCompiler) packageFromImage(p CompilationSpec, tag string, keepPermissions, keepImg bool, concurrency int) (Artifact, error) {
-	if !cs.Clean {
-		if art, err := LoadArtifactFromYaml(p); err == nil {
-			Debug("Artifact reloaded. Skipping build")
-			return art, err
-		}
-	}
-	pkgTag := ":package:  " + p.GetPackage().GetName()
-
-	Info(pkgTag, "   🍩 Build starts 🔨 🔨 🔨 ")
-
-	builderOpts := CompilerBackendOptions{
-		ImageName:   p.GetImage(),
-		Destination: p.Rel(p.GetPackage().GetFingerPrint() + ".image.tar"),
-	}
-	err := cs.Backend.DownloadImage(builderOpts)
-	if err != nil {
-		return nil, errors.Wrap(err, "Could not download image")
-	}
-
-	if tag != "" {
-		err = cs.Backend.CopyImage(p.GetImage(), tag)
-		if err != nil {
-			return nil, errors.Wrap(err, "Could not download image")
-		}
-	}
-	err = cs.Backend.ExportImage(builderOpts)
-	if err != nil {
-		return nil, errors.Wrap(err, "Could not export image")
-	}
-
-	rootfs, err := ioutil.TempDir(p.GetOutputPath(), "rootfs")
-	if err != nil {
-		return nil, errors.Wrap(err, "Could not create tempdir")
-	}
-	defer os.RemoveAll(rootfs) // clean up
-
-	// TODO: Compression and such
-	err = cs.Backend.ExtractRootfs(CompilerBackendOptions{
-		ImageName:  p.GetImage(),
-		SourcePath: builderOpts.Destination, Destination: rootfs}, keepPermissions)
-	if err != nil {
-		return nil, errors.Wrap(err, "Could not extract rootfs")
-	}
-	artifact := NewPackageArtifact(p.Rel(p.GetPackage().GetFingerPrint() + ".package.tar"))
-	artifact.SetCompileSpec(p)
-	artifact.SetCompressionType(cs.CompressionType)
-
-	err = artifact.Compress(rootfs, concurrency)
-	if err != nil {
-		return nil, errors.Wrap(err, "Error met while creating package archive")
-	}
-
-	if !keepImg {
-		// We keep them around, so to not reload them from the tar (which should be the "correct way") and we automatically share the same layers
-		// TODO: Handle caching and optionally do not remove things
-		err = cs.Backend.RemoveImage(builderOpts)
-		if err != nil {
-			Warning("Could not remove image ", builderOpts.ImageName)
-			//	return nil, errors.Wrap(err, "Could not remove image")
-		}
-	}
-
-	Info(pkgTag, "   :white_check_mark: Done")
-
-	err = artifact.WriteYaml(p.GetOutputPath())
-	if err != nil {
-		return artifact, err
-	}
-	return artifact, nil
-}
-
 func (cs *LuetCompiler) ComputeDepTree(p CompilationSpec) (solver.PackagesAssertions, error) {
 
 	s := solver.NewResolver(pkg.NewInMemoryDatabase(false), cs.Database, pkg.NewInMemoryDatabase(false), cs.Options.SolverOptions.Resolver())
 
 	solution, err := s.Install([]pkg.Package{p.GetPackage()})
 	if err != nil {
-		return nil, errors.Wrap(err, "While computing a solution for "+p.GetPackage().GetName())
+		return nil, errors.Wrap(err, "While computing a solution for "+p.GetPackage().HumanReadableString())
 	}
 
 	dependencies := solution.Order(cs.Database, p.GetPackage().GetFingerPrint())
@@ -519,21 +467,20 @@ func (cs *LuetCompiler) Compile(keepPermissions bool, p CompilationSpec) (Artifa
 }
 
 func (cs *LuetCompiler) compile(concurrency int, keepPermissions bool, p CompilationSpec) (Artifact, error) {
-	Info(":package: Compiling", p.GetPackage().GetName(), "version", p.GetPackage().GetVersion(), ".... :coffee:")
+	Info(":package: Compiling", p.GetPackage().HumanReadableString(), ".... :coffee:")
 
 	if len(p.GetPackage().GetRequires()) == 0 && p.GetImage() == "" {
 		Error("Package with no deps and no seed image supplied, bailing out")
 		return nil, errors.New("Package " + p.GetPackage().GetFingerPrint() + "with no deps and no seed image supplied, bailing out")
 	}
 
+	targetAssertion := p.GetSourceAssertion().Search(p.GetPackage().GetFingerPrint())
+	targetPackageHash := cs.ImageRepository + ":" + targetAssertion.Hash.PackageHash
+
 	// - If image is set we just generate a plain dockerfile
 	// Treat last case (easier) first. The image is provided and we just compute a plain dockerfile with the images listed as above
 	if p.GetImage() != "" {
-		if p.ImageUnpack() { // If it is just an entire image, create a package from it
-			return cs.packageFromImage(p, "", keepPermissions, cs.KeepImg, concurrency)
-		}
-
-		return cs.compileWithImage(p.GetImage(), "", "", concurrency, keepPermissions, cs.KeepImg, p)
+		return cs.compileWithImage(p.GetImage(), "", targetPackageHash, concurrency, keepPermissions, cs.KeepImg, p)
 	}
 
 	// - If image is not set, we read a base_image. Then we will build one image from it to kick-off our build based
@@ -547,74 +494,68 @@ func (cs *LuetCompiler) compile(concurrency int, keepPermissions bool, p Compila
 	depsN := 0
 	currentN := 0
 
-	Info(":deciduous_tree: Build dependencies for " + p.GetPackage().GetName())
-	for _, assertion := range dependencies { //highly dependent on the order
-		depsN++
-		Info(" :arrow_right_hook:", assertion.Package.GetName(), ":leaves:", assertion.Package.GetVersion(), "(", assertion.Package.GetCategory(), ")")
-
-	}
-
-	for _, assertion := range dependencies { //highly dependent on the order
-		currentN++
-		pkgTag := fmt.Sprintf(":package:  %d/%d %s ⤑ %s", currentN, depsN, p.GetPackage().GetName(), assertion.Package.GetName())
-		Info(pkgTag, "   :zap:  Building dependency")
-		compileSpec, err := cs.FromPackage(assertion.Package)
-		if err != nil {
-			return nil, errors.Wrap(err, "Error while generating compilespec for "+assertion.Package.GetName())
+	if !cs.Options.NoDeps {
+		Info(":deciduous_tree: Build dependencies for " + p.GetPackage().HumanReadableString())
+		for _, assertion := range dependencies { //highly dependent on the order
+			depsN++
+			Info(" :arrow_right_hook:", assertion.Package.HumanReadableString(), ":leaves:")
 		}
-		compileSpec.SetOutputPath(p.GetOutputPath())
 
-		buildImageHash := cs.ImageRepository + ":" + assertion.Hash.BuildHash
-		currentPackageImageHash := cs.ImageRepository + ":" + assertion.Hash.PackageHash
-		Debug(pkgTag, "    :arrow_right_hook: :whale: Builder image from", buildImageHash)
-		Debug(pkgTag, "    :arrow_right_hook: :whale: Package image name", currentPackageImageHash)
+		for _, assertion := range dependencies { //highly dependent on the order
+			currentN++
+			pkgTag := fmt.Sprintf(":package:  %d/%d %s ⤑ %s", currentN, depsN, p.GetPackage().HumanReadableString(), assertion.Package.HumanReadableString())
+			Info(pkgTag, "   :zap:  Building dependency")
+			compileSpec, err := cs.FromPackage(assertion.Package)
+			if err != nil {
+				return nil, errors.Wrap(err, "Error while generating compilespec for "+assertion.Package.GetName())
+			}
+			compileSpec.SetOutputPath(p.GetOutputPath())
 
-		lastHash = currentPackageImageHash
-		if compileSpec.GetImage() != "" {
-			// TODO: Refactor this
-			if compileSpec.ImageUnpack() { // If it is just an entire image, create a package from it
-				if compileSpec.GetImage() == "" {
-					return nil, errors.New("No image defined for package: " + assertion.Package.GetName())
-				}
-				Info(pkgTag, ":whale: Sourcing package from image", compileSpec.GetImage())
-				artifact, err := cs.packageFromImage(compileSpec, currentPackageImageHash, keepPermissions, cs.KeepImg, concurrency)
+			buildImageHash := cs.ImageRepository + ":" + assertion.Hash.BuildHash
+			currentPackageImageHash := cs.ImageRepository + ":" + assertion.Hash.PackageHash
+			Debug(pkgTag, "    :arrow_right_hook: :whale: Builder image from", buildImageHash)
+			Debug(pkgTag, "    :arrow_right_hook: :whale: Package image name", currentPackageImageHash)
+
+			lastHash = currentPackageImageHash
+			if compileSpec.GetImage() != "" {
+				Debug(pkgTag, " :wrench: Compiling "+compileSpec.GetPackage().HumanReadableString()+" from image")
+				artifact, err := cs.compileWithImage(compileSpec.GetImage(), buildImageHash, currentPackageImageHash, concurrency, keepPermissions, cs.KeepImg, compileSpec)
 				if err != nil {
-					return nil, errors.Wrap(err, "Failed compiling "+compileSpec.GetPackage().GetName())
+					return nil, errors.Wrap(err, "Failed compiling "+compileSpec.GetPackage().HumanReadableString())
 				}
 				departifacts = append(departifacts, artifact)
+				Info(pkgTag, ":white_check_mark: Done")
 				continue
 			}
 
-			Debug(pkgTag, " :wrench: Compiling "+compileSpec.GetPackage().GetFingerPrint()+" from image")
-			artifact, err := cs.compileWithImage(compileSpec.GetImage(), buildImageHash, currentPackageImageHash, concurrency, keepPermissions, cs.KeepImg, compileSpec)
+			Debug(pkgTag, " :wrench: Compiling "+compileSpec.GetPackage().HumanReadableString()+" from tree")
+			artifact, err := cs.compileWithImage(buildImageHash, "", currentPackageImageHash, concurrency, keepPermissions, cs.KeepImg, compileSpec)
 			if err != nil {
-				return nil, errors.Wrap(err, "Failed compiling "+compileSpec.GetPackage().GetName())
+				return nil, errors.Wrap(err, "Failed compiling "+compileSpec.GetPackage().HumanReadableString())
+				//	deperrs = append(deperrs, err)
+				//		break // stop at first error
 			}
 			departifacts = append(departifacts, artifact)
-			Info(pkgTag, ":white_check_mark: Done")
-			continue
+			Info(pkgTag, ":collision: Done")
 		}
 
-		Debug(pkgTag, " :wrench: Compiling "+compileSpec.GetPackage().GetFingerPrint()+" from tree")
-		artifact, err := cs.compileWithImage(buildImageHash, "", currentPackageImageHash, concurrency, keepPermissions, cs.KeepImg, compileSpec)
+	} else if len(dependencies) > 0 {
+		lastHash = cs.ImageRepository + ":" + dependencies[len(dependencies)-1].Hash.PackageHash
+	}
+
+	if !cs.Options.OnlyDeps {
+		Info(":package:", p.GetPackage().HumanReadableString(), ":cyclone:  Building package target from:", lastHash)
+		artifact, err := cs.compileWithImage(lastHash, "", targetPackageHash, concurrency, keepPermissions, cs.KeepImg, p)
 		if err != nil {
-			return nil, errors.Wrap(err, "Failed compiling "+compileSpec.GetPackage().GetName())
-			//	deperrs = append(deperrs, err)
-			//		break // stop at first error
+			return artifact, err
 		}
-		departifacts = append(departifacts, artifact)
-		Info(pkgTag, ":collision: Done")
-	}
+		artifact.SetDependencies(departifacts)
+		artifact.SetSourceAssertion(p.GetSourceAssertion())
 
-	Info(":package:", p.GetPackage().GetName(), ":cyclone:  Building package target from:", lastHash)
-	artifact, err := cs.compileWithImage(lastHash, "", "", concurrency, keepPermissions, cs.KeepImg, p)
-	if err != nil {
 		return artifact, err
+	} else {
+		return departifacts[len(departifacts)-1], nil
 	}
-	artifact.SetDependencies(departifacts)
-	artifact.SetSourceAssertion(p.GetSourceAssertion())
-
-	return artifact, err
 }
 
 func (cs *LuetCompiler) FromPackage(p pkg.Package) (CompilationSpec, error) {

pkg/compiler/interface.go

@@ -49,7 +49,10 @@ type CompilerOptions struct {
 	Concurrency              int
 	CompressionType          CompressionImplementation
 	Clean                    bool
+	KeepImageExport          bool
 
+	OnlyDeps      bool
+	NoDeps        bool
 	SolverOptions config.LuetSolverOptions
 }
 
@@ -62,6 +65,8 @@ func NewDefaultCompilerOptions() *CompilerOptions {
 		KeepImg:         true,
 		Concurrency:     runtime.NumCPU(),
 		Clean:           true,
+		OnlyDeps:        false,
+		NoDeps:          false,
 	}
 }
 

pkg/helpers/cli.go

@@ -0,0 +1,77 @@
+// Copyright © 2020 Ettore Di Giacinto <mudler@gentoo.org>
+//                  Daniele Rondina <geaaru@sabayonlinux.org>
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program; if not, see <http://www.gnu.org/licenses/>.
+
+package helpers
+
+import (
+	"errors"
+	"fmt"
+	"regexp"
+
+	_gentoo "github.com/Sabayon/pkgs-checker/pkg/gentoo"
+	pkg "github.com/mudler/luet/pkg/package"
+)
+
+func CreateRegexArray(rgx []string) ([]*regexp.Regexp, error) {
+	ans := make([]*regexp.Regexp, len(rgx))
+	if len(rgx) > 0 {
+		for idx, reg := range rgx {
+			re := regexp.MustCompile(reg)
+			if re == nil {
+				return nil, errors.New("Invalid regex " + reg + "!")
+			}
+			ans[idx] = re
+		}
+	}
+
+	return ans, nil
+}
+
+func ParsePackageStr(p string) (*pkg.DefaultPackage, error) {
+	gp, err := _gentoo.ParsePackageStr(p)
+	if err != nil {
+		return nil, err
+	}
+	if gp.Version == "" {
+		gp.Version = "0"
+		gp.Condition = _gentoo.PkgCondGreaterEqual
+	}
+
+	pkgVersion := ""
+	if gp.VersionBuild != "" {
+		pkgVersion = fmt.Sprintf("%s%s%s+%s",
+			pkg.PkgSelectorConditionFromInt(gp.Condition.Int()).String(),
+			gp.Version,
+			gp.VersionSuffix,
+			gp.VersionBuild,
+		)
+	} else {
+		pkgVersion = fmt.Sprintf("%s%s%s",
+			pkg.PkgSelectorConditionFromInt(gp.Condition.Int()).String(),
+			gp.Version,
+			gp.VersionSuffix,
+		)
+	}
+
+	pack := &pkg.DefaultPackage{
+		Name:     gp.Name,
+		Category: gp.Category,
+		Version:  pkgVersion,
+		Uri:      make([]string, 0),
+	}
+
+	return pack, nil
+}

pkg/helpers/sys.go

@@ -0,0 +1,32 @@
+// Copyright © 2020 Ettore Di Giacinto <mudler@gentoo.org>
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program; if not, see <http://www.gnu.org/licenses/>.
+
+package helpers
+
+import (
+	"os/exec"
+	"syscall"
+
+	"github.com/pkg/errors"
+)
+
+// This allows a multi-platform switch in the future
+func Exec(cmd string, args []string, env []string) error {
+	path, err := exec.LookPath(cmd)
+	if err != nil {
+		return errors.Wrap(err, "Could not find binary in path: "+cmd)
+	}
+	return syscall.Exec(path, args, env)
+}

pkg/installer/installer.go

@@ -21,6 +21,7 @@ import (
 	"os/exec"
 	"path/filepath"
 	"sort"
+	"strings"
 	"sync"
 
 	"github.com/ghodss/yaml"
@@ -36,8 +37,12 @@ import (
 )
 
 type LuetInstallerOptions struct {
-	SolverOptions config.LuetSolverOptions
-	Concurrency   int
+	SolverOptions               config.LuetSolverOptions
+	Concurrency                 int
+	NoDeps                      bool
+	OnlyDeps                    bool
+	Force                       bool
+	PreserveSystemEssentialData bool
 }
 
 type LuetInstaller struct {
@@ -103,23 +108,15 @@ func (l *LuetInstaller) Upgrade(s *System) error {
 		return err
 	}
 	// First match packages against repositories by priority
-	//	matches := syncedRepos.PackageMatches(p)
 	allRepos := pkg.NewInMemoryDatabase(false)
 	syncedRepos.SyncDatabase(allRepos)
 	// compute a "big" world
 	solv := solver.NewResolver(s.Database, allRepos, pkg.NewInMemoryDatabase(false), l.Options.SolverOptions.Resolver())
-	uninstall, solution, err := solv.Upgrade()
+	uninstall, solution, err := solv.Upgrade(false)
 	if err != nil {
 		return errors.Wrap(err, "Failed solving solution for upgrade")
 	}
 
-	for _, u := range uninstall {
-		err := l.Uninstall(u, s)
-		if err != nil {
-			Warning("Failed uninstall for ", u.GetFingerPrint())
-		}
-	}
-
 	toInstall := []pkg.Package{}
 	for _, assertion := range solution {
 		if assertion.Value {
@@ -127,7 +124,7 @@ func (l *LuetInstaller) Upgrade(s *System) error {
 		}
 	}
 
-	return l.Install(toInstall, s)
+	return l.swap(syncedRepos, uninstall, toInstall, s)
 }
 
 func (l *LuetInstaller) SyncRepositories(inMemory bool) (Repositories, error) {
@@ -152,7 +149,62 @@ func (l *LuetInstaller) SyncRepositories(inMemory bool) (Repositories, error) {
 	return syncedRepos, nil
 }
 
-func (l *LuetInstaller) Install(cp []pkg.Package, s *System) error {
+func (l *LuetInstaller) Swap(toRemove []pkg.Package, toInstall []pkg.Package, s *System) error {
+	syncedRepos, err := l.SyncRepositories(true)
+	if err != nil {
+		return err
+	}
+	return l.swap(syncedRepos, toRemove, toInstall, s)
+}
+
+func (l *LuetInstaller) swap(syncedRepos Repositories, toRemove []pkg.Package, toInstall []pkg.Package, s *System) error {
+
+	// First match packages against repositories by priority
+	allRepos := pkg.NewInMemoryDatabase(false)
+	syncedRepos.SyncDatabase(allRepos)
+	toInstall = syncedRepos.ResolveSelectors(toInstall)
+
+	if err := l.install(syncedRepos, toInstall, s, true); err != nil {
+		return errors.Wrap(err, "Pre-downloading packages")
+	}
+
+	// We don't want any conflict with the installed to raise during the upgrade.
+	// In this way we both force uninstalls and we avoid to check with conflicts
+	// against the current system state which is pending to deletion
+	// E.g. you can't check for conflicts for an upgrade of a new version of A
+	// if the old A results installed in the system. This is due to the fact that
+	// now the solver enforces the constraints and explictly denies two packages
+	// of the same version installed.
+	forced := false
+	if l.Options.Force {
+		forced = true
+	}
+	l.Options.Force = true
+
+	for _, u := range toRemove {
+		Info(":package: Marked for deletion", u.HumanReadableString())
+
+		err := l.Uninstall(u, s)
+		if err != nil && !l.Options.Force {
+			Error("Failed uninstall for ", u.HumanReadableString())
+			return errors.Wrap(err, "uninstalling "+u.HumanReadableString())
+		}
+
+	}
+	l.Options.Force = forced
+
+	return l.install(syncedRepos, toInstall, s, false)
+}
+
+func (l *LuetInstaller) Install(cp []pkg.Package, s *System, downloadOnly bool) error {
+	syncedRepos, err := l.SyncRepositories(true)
+	if err != nil {
+		return err
+	}
+	return l.install(syncedRepos, cp, s, downloadOnly)
+}
+
+func (l *LuetInstaller) install(syncedRepos Repositories, cp []pkg.Package, s *System, downloadOnly bool) error {
 	var p []pkg.Package
 
 	// Check if the package is installed first
@@ -161,7 +213,7 @@ func (l *LuetInstaller) Install(cp []pkg.Package, s *System) error {
 		vers, _ := s.Database.FindPackageVersions(pi)
 
 		if len(vers) >= 1 {
-			Warning("Filtering out package " + pi.GetFingerPrint() + ", it has other versions already installed. Uninstall one of them first ")
+			Warning("Filtering out package " + pi.HumanReadableString() + ", it has other versions already installed. Uninstall one of them first ")
 			continue
 			//return errors.New("Package " + pi.GetFingerPrint() + " has other versions already installed. Uninstall one of them first: " + strings.Join(vers, " "))
 
@@ -175,10 +227,6 @@ func (l *LuetInstaller) Install(cp []pkg.Package, s *System) error {
 	}
 	// First get metas from all repos (and decodes trees)
 
-	syncedRepos, err := l.SyncRepositories(true)
-	if err != nil {
-		return err
-	}
 	// First match packages against repositories by priority
 	//	matches := syncedRepos.PackageMatches(p)
 
@@ -186,111 +234,181 @@ func (l *LuetInstaller) Install(cp []pkg.Package, s *System) error {
 	allRepos := pkg.NewInMemoryDatabase(false)
 	syncedRepos.SyncDatabase(allRepos)
 	p = syncedRepos.ResolveSelectors(p)
-
-	solv := solver.NewResolver(s.Database, allRepos, pkg.NewInMemoryDatabase(false), l.Options.SolverOptions.Resolver())
-	solution, err := solv.Install(p)
-	if err != nil {
-		return errors.Wrap(err, "Failed solving solution for package")
-	}
-
-	// Gathers things to install
 	toInstall := map[string]ArtifactMatch{}
-	for _, assertion := range solution {
-		if assertion.Value {
-			matches := syncedRepos.PackageMatches([]pkg.Package{assertion.Package})
-			if len(matches) == 0 {
-				return errors.New("Failed matching solutions against repository - where are definitions coming from?!")
-			}
-		A:
-			for _, artefact := range matches[0].Repo.GetIndex() {
-				if artefact.GetCompileSpec().GetPackage() == nil {
-					return errors.New("Package in compilespec empty")
+	var packagesToInstall []pkg.Package
+	var err error
+	var solution solver.PackagesAssertions
 
-				}
-				if matches[0].Package.Matches(artefact.GetCompileSpec().GetPackage()) {
-					// Filter out already installed
-					if _, err := s.Database.FindPackage(assertion.Package); err != nil {
-						toInstall[assertion.Package.GetFingerPrint()] = ArtifactMatch{Package: assertion.Package, Artifact: artefact, Repository: matches[0].Repo}
-					}
-					break A
-				}
+	if !l.Options.NoDeps {
+		solv := solver.NewResolver(s.Database, allRepos, pkg.NewInMemoryDatabase(false), l.Options.SolverOptions.Resolver())
+		solution, err = solv.Install(p)
+		if err != nil && !l.Options.Force {
+			return errors.Wrap(err, "Failed solving solution for package")
+		}
+		// Gathers things to install
+		for _, assertion := range solution {
+			if assertion.Value {
+				packagesToInstall = append(packagesToInstall, assertion.Package)
 			}
 		}
+	} else if !l.Options.OnlyDeps {
+		for _, currentPack := range p {
+			packagesToInstall = append(packagesToInstall, currentPack)
+		}
 	}
 
+	// Gathers things to install
+	for _, currentPack := range packagesToInstall {
+		matches := syncedRepos.PackageMatches([]pkg.Package{currentPack})
+		if len(matches) == 0 {
+			return errors.New("Failed matching solutions against repository for " + currentPack.HumanReadableString() + " where are definitions coming from?!")
+		}
+	A:
+		for _, artefact := range matches[0].Repo.GetIndex() {
+			if artefact.GetCompileSpec().GetPackage() == nil {
+				return errors.New("Package in compilespec empty")
+
+			}
+			if matches[0].Package.Matches(artefact.GetCompileSpec().GetPackage()) {
+				// Filter out already installed
+				if _, err := s.Database.FindPackage(currentPack); err != nil {
+					toInstall[currentPack.GetFingerPrint()] = ArtifactMatch{Package: currentPack, Artifact: artefact, Repository: matches[0].Repo}
+				}
+				break A
+			}
+		}
+	}
 	// Install packages into rootfs in parallel.
 	all := make(chan ArtifactMatch)
 
 	var wg = new(sync.WaitGroup)
-	for i := 0; i < l.Options.Concurrency; i++ {
-		wg.Add(1)
-		go l.installerWorker(i, wg, all, s)
+
+	if !downloadOnly {
+		// Download first
+		for i := 0; i < l.Options.Concurrency; i++ {
+			wg.Add(1)
+			go l.installerWorker(i, wg, all, s, true)
+		}
+
+		for _, c := range toInstall {
+			all <- c
+		}
+		close(all)
+		wg.Wait()
+
+		all = make(chan ArtifactMatch)
+
+		wg = new(sync.WaitGroup)
+
+		// Do the real install
+		for i := 0; i < l.Options.Concurrency; i++ {
+			wg.Add(1)
+			go l.installerWorker(i, wg, all, s, false)
+		}
+
+		for _, c := range toInstall {
+			all <- c
+		}
+		close(all)
+		wg.Wait()
+	} else {
+		for i := 0; i < l.Options.Concurrency; i++ {
+			wg.Add(1)
+			go l.installerWorker(i, wg, all, s, downloadOnly)
+		}
+
+		for _, c := range toInstall {
+			all <- c
+		}
+		close(all)
+		wg.Wait()
+	}
+
+	if downloadOnly {
+		return nil
 	}
 
 	for _, c := range toInstall {
-		all <- c
+		// Annotate to the system that the package was installed
+		_, err := s.Database.CreatePackage(c.Package)
+		if err != nil && !l.Options.Force {
+			return errors.Wrap(err, "Failed creating package")
+		}
 	}
-	close(all)
-	wg.Wait()
-
 	executedFinalizer := map[string]bool{}
 
-	// TODO: Lower those errors as warning
-	for _, w := range p {
-		// Finalizers needs to run in order and in sequence.
-		ordered := solution.Order(allRepos, w.GetFingerPrint())
-		for _, ass := range ordered {
-			if ass.Value {
-				// Annotate to the system that the package was installed
-				// TODO: Annotate also files that belong to the package, somewhere to uninstall
-				if _, err := s.Database.FindPackage(ass.Package); err == nil {
-					err := s.Database.UpdatePackage(ass.Package)
-					if err != nil {
-						return errors.Wrap(err, "Failed updating package")
-					}
-				} else {
-					_, err := s.Database.CreatePackage(ass.Package)
-					if err != nil {
-						return errors.Wrap(err, "Failed creating package")
-					}
-				}
-				installed, ok := toInstall[ass.Package.GetFingerPrint()]
-				if !ok {
-					return errors.New("Couldn't find ArtifactMatch for " + ass.Package.GetFingerPrint())
-				}
+	if !l.Options.NoDeps {
+		// TODO: Lower those errors as warning
+		for _, w := range p {
+			// Finalizers needs to run in order and in sequence.
+			ordered := solution.Order(allRepos, w.GetFingerPrint())
+		ORDER:
+			for _, ass := range ordered {
+				if ass.Value {
 
-				treePackage, err := installed.Repository.GetTree().GetDatabase().FindPackage(ass.Package)
-				if err != nil {
-					return errors.Wrap(err, "Error getting package "+ass.Package.GetFingerPrint())
-				}
-				if helpers.Exists(treePackage.Rel(tree.FinalizerFile)) {
-					Info("Executing finalizer for " + ass.Package.GetName())
-					finalizerRaw, err := ioutil.ReadFile(treePackage.Rel(tree.FinalizerFile))
-					if err != nil {
-						return errors.Wrap(err, "Error reading file "+treePackage.Rel(tree.FinalizerFile))
+					installed, ok := toInstall[ass.Package.GetFingerPrint()]
+					if !ok {
+						// It was a dep already installed in the system, so we can skip it safely
+						continue ORDER
 					}
-					if _, exists := executedFinalizer[ass.Package.GetFingerPrint()]; !exists {
-						finalizer, err := NewLuetFinalizerFromYaml(finalizerRaw)
-						if err != nil {
-							return errors.Wrap(err, "Error reading finalizer "+treePackage.Rel(tree.FinalizerFile))
+
+					treePackage, err := installed.Repository.GetTree().GetDatabase().FindPackage(ass.Package)
+					if err != nil {
+						return errors.Wrap(err, "Error getting package "+ass.Package.HumanReadableString())
+					}
+					if helpers.Exists(treePackage.Rel(tree.FinalizerFile)) {
+						Info("Executing finalizer for " + ass.Package.HumanReadableString())
+						finalizerRaw, err := ioutil.ReadFile(treePackage.Rel(tree.FinalizerFile))
+						if err != nil && !l.Options.Force {
+							return errors.Wrap(err, "Error reading file "+treePackage.Rel(tree.FinalizerFile))
 						}
-						err = finalizer.RunInstall()
-						if err != nil {
-							return errors.Wrap(err, "Error executing install finalizer "+treePackage.Rel(tree.FinalizerFile))
+						if _, exists := executedFinalizer[ass.Package.GetFingerPrint()]; !exists {
+							finalizer, err := NewLuetFinalizerFromYaml(finalizerRaw)
+							if err != nil && !l.Options.Force {
+								return errors.Wrap(err, "Error reading finalizer "+treePackage.Rel(tree.FinalizerFile))
+							}
+							err = finalizer.RunInstall()
+							if err != nil && !l.Options.Force {
+								return errors.Wrap(err, "Error executing install finalizer "+treePackage.Rel(tree.FinalizerFile))
+							}
+							executedFinalizer[ass.Package.GetFingerPrint()] = true
 						}
-						executedFinalizer[ass.Package.GetFingerPrint()] = true
 					}
 				}
 			}
+
+		}
+	} else {
+		for _, c := range toInstall {
+			treePackage, err := c.Repository.GetTree().GetDatabase().FindPackage(c.Package)
+			if err != nil {
+				return errors.Wrap(err, "Error getting package "+c.Package.HumanReadableString())
+			}
+			if helpers.Exists(treePackage.Rel(tree.FinalizerFile)) {
+				Info("Executing finalizer for " + c.Package.HumanReadableString())
+				finalizerRaw, err := ioutil.ReadFile(treePackage.Rel(tree.FinalizerFile))
+				if err != nil && !l.Options.Force {
+					return errors.Wrap(err, "Error reading file "+treePackage.Rel(tree.FinalizerFile))
+				}
+				if _, exists := executedFinalizer[c.Package.GetFingerPrint()]; !exists {
+					finalizer, err := NewLuetFinalizerFromYaml(finalizerRaw)
+					if err != nil && !l.Options.Force {
+						return errors.Wrap(err, "Error reading finalizer "+treePackage.Rel(tree.FinalizerFile))
+					}
+					err = finalizer.RunInstall()
+					if err != nil && !l.Options.Force {
+						return errors.Wrap(err, "Error executing install finalizer "+treePackage.Rel(tree.FinalizerFile))
+					}
+					executedFinalizer[c.Package.GetFingerPrint()] = true
+				}
+			}
 		}
-
 	}
-
 	return nil
 
 }
 
-func (l *LuetInstaller) installPackage(a ArtifactMatch, s *System) error {
+func (l *LuetInstaller) installPackage(a ArtifactMatch, s *System, downloadOnly bool) error {
 
 	artifact, err := a.Repository.Client().DownloadArtifact(a.Artifact)
 	if err != nil {
@@ -298,17 +416,20 @@ func (l *LuetInstaller) installPackage(a ArtifactMatch, s *System) error {
 	}
 
 	err = artifact.Verify()
-	if err != nil {
+	if err != nil && !l.Options.Force {
 		return errors.Wrap(err, "Artifact integrity check failure")
 	}
+	if downloadOnly {
+		return nil
+	}
 
 	files, err := artifact.FileList()
-	if err != nil {
+	if err != nil && !l.Options.Force {
 		return errors.Wrap(err, "Could not open package archive")
 	}
 
 	err = artifact.Unpack(s.Target, true)
-	if err != nil {
+	if err != nil && !l.Options.Force {
 		return errors.Wrap(err, "Error met while unpacking rootfs")
 	}
 
@@ -317,17 +438,24 @@ func (l *LuetInstaller) installPackage(a ArtifactMatch, s *System) error {
 	return s.Database.SetPackageFiles(&pkg.PackageFile{PackageFingerprint: a.Package.GetFingerPrint(), Files: files})
 }
 
-func (l *LuetInstaller) installerWorker(i int, wg *sync.WaitGroup, c <-chan ArtifactMatch, s *System) error {
+func (l *LuetInstaller) installerWorker(i int, wg *sync.WaitGroup, c <-chan ArtifactMatch, s *System, downloadOnly bool) error {
 	defer wg.Done()
 
 	for p := range c {
 		// TODO: Keep trace of what was added from the tar, and save it into system
-		err := l.installPackage(p, s)
-		if err != nil {
+		err := l.installPackage(p, s, downloadOnly)
+		if err != nil && !l.Options.Force {
 			//TODO: Uninstall, rollback.
 			Fatal("Failed installing package "+p.Package.GetName(), err.Error())
 			return errors.Wrap(err, "Failed installing package "+p.Package.GetName())
 		}
+		if err == nil && downloadOnly {
+			Info(":package: ", p.Package.HumanReadableString(), "downloaded")
+		} else if err == nil {
+			Info(":package: ", p.Package.HumanReadableString(), "installed")
+		} else if err != nil && l.Options.Force {
+			Info(":package: ", p.Package.HumanReadableString(), "installed with failures (force install)")
+		}
 	}
 
 	return nil
@@ -342,7 +470,15 @@ func (l *LuetInstaller) uninstall(p pkg.Package, s *System) error {
 	// Remove from target
 	for _, f := range files {
 		target := filepath.Join(s.Target, f)
-		Info("Removing", target)
+		Debug("Removing", target)
+
+		if l.Options.PreserveSystemEssentialData &&
+			strings.HasPrefix(f, config.LuetCfg.GetSystem().GetSystemPkgsCacheDirPath()) ||
+			strings.HasPrefix(f, config.LuetCfg.GetSystem().GetSystemRepoDatabaseDirPath()) {
+			Warning("Preserve ", f, " which is required by luet ( you have to delete it manually if you really need to)")
+			continue
+		}
+
 		err := os.Remove(target)
 		if err != nil {
 			Warning("Failed removing file (not present in the system target ?)", target)
@@ -362,19 +498,34 @@ func (l *LuetInstaller) uninstall(p pkg.Package, s *System) error {
 }
 
 func (l *LuetInstaller) Uninstall(p pkg.Package, s *System) error {
-	// compute uninstall from all world - remove packages in parallel - run uninstall finalizer (in order) - mark the uninstallation in db
+	// compute uninstall from all world - remove packages in parallel - run uninstall finalizer (in order) TODO - mark the uninstallation in db
 	// Get installed definition
-	solv := solver.NewResolver(s.Database, s.Database, pkg.NewInMemoryDatabase(false), l.Options.SolverOptions.Resolver())
-	solution, err := solv.Uninstall(p)
-	if err != nil {
-		return errors.Wrap(err, "Uninstall failed")
+
+	checkConflicts := true
+	if l.Options.Force == true {
+		checkConflicts = false
 	}
-	for _, p := range solution {
-		Info("Uninstalling", p.GetFingerPrint())
+
+	if !l.Options.NoDeps {
+		solv := solver.NewResolver(s.Database, s.Database, pkg.NewInMemoryDatabase(false), l.Options.SolverOptions.Resolver())
+		solution, err := solv.Uninstall(p, checkConflicts)
+		if err != nil && !l.Options.Force {
+			return errors.Wrap(err, "Could not solve the uninstall constraints. Tip: try with --solver-type qlearning or with --force, or by removing packages excluding their dependencies with --nodeps")
+		}
+		for _, p := range solution {
+			Info("Uninstalling", p.HumanReadableString())
+			err := l.uninstall(p, s)
+			if err != nil && !l.Options.Force {
+				return errors.Wrap(err, "Uninstall failed")
+			}
+		}
+	} else {
+		Info("Uninstalling", p.HumanReadableString(), "without deps")
 		err := l.uninstall(p, s)
-		if err != nil {
+		if err != nil && !l.Options.Force {
 			return errors.Wrap(err, "Uninstall failed")
 		}
+		Info(":package: ", p.HumanReadableString(), "uninstalled")
 	}
 	return nil
 

pkg/installer/installer_test.go

@@ -113,7 +113,7 @@ urls:
 			Expect(repo.GetType()).To(Equal("disk"))
 			systemDB := pkg.NewInMemoryDatabase(false)
 			system := &System{Database: systemDB, Target: fakeroot}
-			err = inst.Install([]pkg.Package{&pkg.DefaultPackage{Name: "b", Category: "test", Version: "1.0"}}, system)
+			err = inst.Install([]pkg.Package{&pkg.DefaultPackage{Name: "b", Category: "test", Version: "1.0"}}, system, false)
 			Expect(err).ToNot(HaveOccurred())
 
 			Expect(helpers.Exists(filepath.Join(fakeroot, "test5"))).To(BeTrue())
@@ -231,7 +231,7 @@ urls:
 
 			systemDB := pkg.NewBoltDatabase(filepath.Join(bolt, "db.db"))
 			system := &System{Database: systemDB, Target: fakeroot}
-			err = inst.Install([]pkg.Package{&pkg.DefaultPackage{Name: "b", Category: "test", Version: "1.0"}}, system)
+			err = inst.Install([]pkg.Package{&pkg.DefaultPackage{Name: "b", Category: "test", Version: "1.0"}}, system, false)
 			Expect(err).ToNot(HaveOccurred())
 
 			Expect(helpers.Exists(filepath.Join(fakeroot, "test5"))).To(BeTrue())
@@ -339,7 +339,7 @@ urls:
 
 			systemDB := pkg.NewBoltDatabase(filepath.Join(bolt, "db.db"))
 			system := &System{Database: systemDB, Target: fakeroot}
-			err = inst.Install([]pkg.Package{&pkg.DefaultPackage{Name: "b", Category: "test", Version: "1.0"}}, system)
+			err = inst.Install([]pkg.Package{&pkg.DefaultPackage{Name: "b", Category: "test", Version: "1.0"}}, system, false)
 			Expect(err).ToNot(HaveOccurred())
 
 			Expect(helpers.Exists(filepath.Join(fakeroot, "test5"))).To(BeTrue())
@@ -454,7 +454,7 @@ urls:
 
 			systemDB := pkg.NewBoltDatabase(filepath.Join(bolt, "db.db"))
 			system := &System{Database: systemDB, Target: fakeroot}
-			err = inst.Install([]pkg.Package{&pkg.DefaultPackage{Name: "b", Category: "test", Version: "1.0"}}, system)
+			err = inst.Install([]pkg.Package{&pkg.DefaultPackage{Name: "b", Category: "test", Version: "1.0"}}, system, false)
 			Expect(err).ToNot(HaveOccurred())
 
 			Expect(helpers.Exists(filepath.Join(fakeroot, "test5"))).To(BeTrue())

pkg/installer/interface.go

@@ -23,11 +23,12 @@ import (
 )
 
 type Installer interface {
-	Install([]pkg.Package, *System) error
+	Install([]pkg.Package, *System, bool) error
 	Uninstall(pkg.Package, *System) error
 	Upgrade(s *System) error
 	Repositories([]Repository)
 	SyncRepositories(bool) (Repositories, error)
+	Swap([]pkg.Package, []pkg.Package, *System) error
 }
 
 type Client interface {

pkg/installer/repository.go

@@ -21,7 +21,6 @@ import (
 	"os"
 	"path"
 	"path/filepath"
-	"regexp"
 	"sort"
 	"strconv"
 	"strings"
@@ -69,6 +68,19 @@ type LuetSystemRepositorySerialized struct {
 	TreeChecksums       compiler.Checksums                 `json:"treechecksums"`
 }
 
+type LuetSearchModeType string
+
+const (
+	SLabel      LuetSearchModeType = "label"
+	SRegexPkg   LuetSearchModeType = "regexPkg"
+	SRegexLabel LuetSearchModeType = "regexLabel"
+)
+
+type LuetSearchOpts struct {
+	Pattern string
+	Mode    LuetSearchModeType
+}
+
 func GenerateRepository(name, descr, t string, urls []string, priority int, src, treeDir string, db pkg.PackageDatabase) (Repository, error) {
 
 	art, err := buildPackageIndex(src)
@@ -530,14 +542,21 @@ func (re Repositories) ResolveSelectors(p []pkg.Package) []pkg.Package {
 	var matches []pkg.Package
 PACKAGE:
 	for _, pack := range p {
+	REPOSITORY:
 		for _, r := range re {
 			if pack.IsSelector() {
 				c, err := r.GetTree().GetDatabase().FindPackageCandidate(pack)
+				// If FindPackageCandidate returns the same package, it means it couldn't find one.
+				// Skip this repository and keep looking.
+				if c.String() == pack.String() {
+					continue REPOSITORY
+				}
 				if err == nil {
 					matches = append(matches, c)
 					continue PACKAGE
 				}
 			} else {
+				// If it's not a selector, just append it
 				matches = append(matches, pack)
 			}
 		}
@@ -547,14 +566,24 @@ PACKAGE:
 
 }
 
-func (re Repositories) Search(s string) []PackageMatch {
+func (re Repositories) SearchPackages(p string, o LuetSearchOpts) []PackageMatch {
 	sort.Sort(re)
-	var term = regexp.MustCompile(s)
 	var matches []PackageMatch
+	var err error
 
 	for _, r := range re {
-		for _, pack := range r.GetTree().GetDatabase().World() {
-			if term.MatchString(pack.GetName()) {
+		var repoMatches []pkg.Package
+		if o.Mode == SRegexPkg {
+			repoMatches, err = r.GetTree().GetDatabase().FindPackageMatch(p)
+
+		} else if o.Mode == SLabel {
+			repoMatches, err = r.GetTree().GetDatabase().FindPackageLabel(p)
+		} else if o.Mode == SRegexLabel {
+			repoMatches, err = r.GetTree().GetDatabase().FindPackageLabelMatch(p)
+		}
+
+		if err == nil && len(repoMatches) > 0 {
+			for _, pack := range repoMatches {
 				matches = append(matches, PackageMatch{Package: pack, Repo: r})
 			}
 		}
@@ -562,3 +591,15 @@ func (re Repositories) Search(s string) []PackageMatch {
 
 	return matches
 }
+
+func (re Repositories) SearchLabelMatch(s string) []PackageMatch {
+	return re.SearchPackages(s, LuetSearchOpts{Pattern: s, Mode: SRegexLabel})
+}
+
+func (re Repositories) SearchLabel(s string) []PackageMatch {
+	return re.SearchPackages(s, LuetSearchOpts{Pattern: s, Mode: SLabel})
+}
+
+func (re Repositories) Search(s string) []PackageMatch {
+	return re.SearchPackages(s, LuetSearchOpts{Pattern: s, Mode: SRegexPkg})
+}

pkg/package/database.go

@@ -45,6 +45,9 @@ type PackageSet interface {
 	World() []Package
 
 	FindPackageCandidate(p Package) (Package, error)
+	FindPackageLabel(labelKey string) ([]Package, error)
+	FindPackageLabelMatch(pattern string) ([]Package, error)
+	FindPackageMatch(pattern string) ([]Package, error)
 }
 
 type PackageFile struct {

pkg/package/database_boltdb.go

@@ -18,6 +18,7 @@ package pkg
 import (
 	"encoding/base64"
 	"os"
+	"regexp"
 	"strconv"
 	"sync"
 	"time"
@@ -384,3 +385,61 @@ func (db *BoltDatabase) FindPackageVersions(p Package) ([]Package, error) {
 	}
 	return versionsInWorld, nil
 }
+
+func (db *BoltDatabase) FindPackageLabel(labelKey string) ([]Package, error) {
+	var ans []Package
+
+	for _, k := range db.GetPackages() {
+		pack, err := db.GetPackage(k)
+		if err != nil {
+			return ans, err
+		}
+		if pack.HasLabel(labelKey) {
+			ans = append(ans, pack)
+		}
+	}
+	return ans, nil
+}
+
+func (db *BoltDatabase) FindPackageLabelMatch(pattern string) ([]Package, error) {
+	var ans []Package
+
+	re := regexp.MustCompile(pattern)
+	if re == nil {
+		return nil, errors.New("Invalid regex " + pattern + "!")
+	}
+
+	for _, k := range db.GetPackages() {
+		pack, err := db.GetPackage(k)
+		if err != nil {
+			return ans, err
+		}
+		if pack.MatchLabel(re) {
+			ans = append(ans, pack)
+		}
+	}
+
+	return ans, nil
+}
+
+func (db *BoltDatabase) FindPackageMatch(pattern string) ([]Package, error) {
+	var ans []Package
+
+	re := regexp.MustCompile(pattern)
+	if re == nil {
+		return nil, errors.New("Invalid regex " + pattern + "!")
+	}
+
+	for _, k := range db.GetPackages() {
+		pack, err := db.GetPackage(k)
+		if err != nil {
+			return ans, err
+		}
+
+		if re.MatchString(pack.GetCategory() + pack.GetName()) {
+			ans = append(ans, pack)
+		}
+	}
+
+	return ans, nil
+}

pkg/package/database_mem.go

@@ -18,6 +18,7 @@ package pkg
 import (
 	"encoding/base64"
 	"encoding/json"
+	"regexp"
 	"sync"
 
 	"github.com/pkg/errors"
@@ -358,3 +359,62 @@ func (db *InMemoryDatabase) FindPackageCandidate(p Package) (Package, error) {
 	return required, err
 
 }
+
+func (db *InMemoryDatabase) FindPackageLabel(labelKey string) ([]Package, error) {
+	var ans []Package
+
+	for _, k := range db.GetPackages() {
+		pack, err := db.GetPackage(k)
+		if err != nil {
+			return ans, err
+		}
+		if pack.HasLabel(labelKey) {
+			ans = append(ans, pack)
+		}
+	}
+
+	return ans, nil
+}
+
+func (db *InMemoryDatabase) FindPackageLabelMatch(pattern string) ([]Package, error) {
+	var ans []Package
+
+	re := regexp.MustCompile(pattern)
+	if re == nil {
+		return nil, errors.New("Invalid regex " + pattern + "!")
+	}
+
+	for _, k := range db.GetPackages() {
+		pack, err := db.GetPackage(k)
+		if err != nil {
+			return ans, err
+		}
+		if pack.MatchLabel(re) {
+			ans = append(ans, pack)
+		}
+	}
+
+	return ans, nil
+}
+
+func (db *InMemoryDatabase) FindPackageMatch(pattern string) ([]Package, error) {
+	var ans []Package
+
+	re := regexp.MustCompile(pattern)
+	if re == nil {
+		return nil, errors.New("Invalid regex " + pattern + "!")
+	}
+
+	for _, k := range db.GetPackages() {
+		pack, err := db.GetPackage(k)
+		if err != nil {
+			return ans, err
+		}
+
+		if re.MatchString(pack.GetCategory() + pack.GetName()) {
+			ans = append(ans, pack)
+		}
+	}
+
+	return ans, nil
+}

pkg/package/package.go

@@ -17,19 +17,22 @@ package pkg
 
 import (
 	"bytes"
+	"crypto/md5"
 	"encoding/json"
 	"fmt"
+	"io"
 	"path/filepath"
+	"regexp"
 	"sort"
+	"strconv"
 	"strings"
 
-	//	. "github.com/mudler/luet/pkg/logger"
-
+	gentoo "github.com/Sabayon/pkgs-checker/pkg/gentoo"
 	"github.com/crillab/gophersat/bf"
+	"github.com/ghodss/yaml"
 	version "github.com/hashicorp/go-version"
 	"github.com/jinzhu/copier"
-
-	"github.com/ghodss/yaml"
+	"github.com/pkg/errors"
 )
 
 // Package is a package interface (TBD)
@@ -45,6 +48,7 @@ type Package interface {
 	Requires([]*DefaultPackage) Package
 	Conflicts([]*DefaultPackage) Package
 	Revdeps(PackageDatabase) []Package
+	LabelDeps(PackageDatabase, string) []Package
 
 	GetProvides() []*DefaultPackage
 	SetProvides([]*DefaultPackage) Package
@@ -60,7 +64,7 @@ type Package interface {
 	GetVersion() string
 	RequiresContains(PackageDatabase, Package) (bool, error)
 	Matches(m Package) bool
-	Bigger(m Package) bool
+	BumpBuildVersion() error
 
 	AddUse(use string)
 	RemoveUse(use string)
@@ -82,11 +86,18 @@ type Package interface {
 	SetLicense(string)
 	GetLicense() string
 
+	AddLabel(string, string)
+	GetLabels() map[string]string
+	HasLabel(string) bool
+	MatchLabel(*regexp.Regexp) bool
+
 	IsSelector() bool
 	VersionMatchSelector(string) (bool, error)
 	SelectorMatchVersion(string) (bool, error)
 
 	String() string
+	HumanReadableString() string
+	HashFingerprint() string
 }
 
 type Tree interface {
@@ -146,9 +157,11 @@ type DefaultPackage struct {
 	// Path is set only internally when tree is loaded from disk
 	Path string `json:"path,omitempty"`
 
-	Description string   `json:"description"`
-	Uri         []string `json:"uri"`
-	License     string   `json:"license"`
+	Description string   `json:"description,omitempty"`
+	Uri         []string `json:"uri,omitempty"`
+	License     string   `json:"license,omitempty"`
+
+	Labels map[string]string `json:labels,omitempty`
 }
 
 // State represent the package state
@@ -156,7 +169,13 @@ type State string
 
 // NewPackage returns a new package
 func NewPackage(name, version string, requires []*DefaultPackage, conflicts []*DefaultPackage) *DefaultPackage {
-	return &DefaultPackage{Name: name, Version: version, PackageRequires: requires, PackageConflicts: conflicts}
+	return &DefaultPackage{
+		Name:             name,
+		Version:          version,
+		PackageRequires:  requires,
+		PackageConflicts: conflicts,
+		Labels:           make(map[string]string, 0),
+	}
 }
 
 func (p *DefaultPackage) String() string {
@@ -173,6 +192,16 @@ func (p *DefaultPackage) GetFingerPrint() string {
 	return fmt.Sprintf("%s-%s-%s", p.Name, p.Category, p.Version)
 }
 
+func (p *DefaultPackage) HashFingerprint() string {
+	h := md5.New()
+	io.WriteString(h, p.GetFingerPrint())
+	return fmt.Sprintf("%x", h.Sum(nil))
+}
+
+func (p *DefaultPackage) HumanReadableString() string {
+	return fmt.Sprintf("%s/%s-%s", p.Category, p.Name, p.Version)
+}
+
 func FromString(s string) Package {
 	var unescaped DefaultPackage
 
@@ -204,6 +233,28 @@ func (p *DefaultPackage) IsSelector() bool {
 	return strings.ContainsAny(p.GetVersion(), "<>=")
 }
 
+func (p *DefaultPackage) HasLabel(label string) bool {
+	ans := false
+	for k, _ := range p.Labels {
+		if k == label {
+			ans = true
+			break
+		}
+	}
+	return ans
+}
+
+func (p *DefaultPackage) MatchLabel(r *regexp.Regexp) bool {
+	ans := false
+	for k, v := range p.Labels {
+		if r.MatchString(k + "=" + v) {
+			ans = true
+			break
+		}
+	}
+	return ans
+}
+
 // AddUse adds a use to a package
 func (p *DefaultPackage) AddUse(use string) {
 	for _, v := range p.UseFlags {
@@ -288,6 +339,12 @@ func (p *DefaultPackage) SetCategory(s string) {
 func (p *DefaultPackage) GetUses() []string {
 	return p.UseFlags
 }
+func (p *DefaultPackage) AddLabel(k, v string) {
+	p.Labels[k] = v
+}
+func (p *DefaultPackage) GetLabels() map[string]string {
+	return p.Labels
+}
 func (p *DefaultPackage) GetProvides() []*DefaultPackage {
 	return p.Provides
 }
@@ -320,13 +377,6 @@ func (p *DefaultPackage) Matches(m Package) bool {
 	}
 	return false
 }
-func (p *DefaultPackage) Bigger(m Package) bool {
-	low := Lower([]Package{p, m})
-	if low.Matches(m) {
-		return true
-	}
-	return false
-}
 
 func (p *DefaultPackage) Expand(definitiondb PackageDatabase) ([]Package, error) {
 	var versionsInWorld []Package
@@ -365,6 +415,19 @@ func (p *DefaultPackage) Revdeps(definitiondb PackageDatabase) []Package {
 	return versionsInWorld
 }
 
+func (p *DefaultPackage) LabelDeps(definitiondb PackageDatabase, labelKey string) []Package {
+	var pkgsWithLabelInWorld []Package
+	// TODO: check if integrate some index to improve
+	// research instead of iterate all list.
+	for _, w := range definitiondb.World() {
+		if w.HasLabel(labelKey) {
+			pkgsWithLabelInWorld = append(pkgsWithLabelInWorld, w)
+		}
+	}
+
+	return pkgsWithLabelInWorld
+}
+
 func DecodePackage(ID string, db PackageDatabase) (Package, error) {
 	return db.GetPackage(ID)
 }
@@ -394,29 +457,7 @@ func (pack *DefaultPackage) RequiresContains(definitiondb PackageDatabase, s Pac
 
 	return false, nil
 }
-func Lower(set []Package) Package {
-	var versionsMap map[string]Package = make(map[string]Package)
-	if len(set) == 0 {
-		panic("Best needs a list with elements")
-	}
 
-	versionsRaw := []string{}
-	for _, p := range set {
-		versionsRaw = append(versionsRaw, p.GetVersion())
-		versionsMap[p.GetVersion()] = p
-	}
-
-	versions := make([]*version.Version, len(versionsRaw))
-	for i, raw := range versionsRaw {
-		v, _ := version.NewVersion(raw)
-		versions[i] = v
-	}
-
-	// After this, the versions are properly sorted
-	sort.Sort(version.Collection(versions))
-
-	return versionsMap[versions[0].Original()]
-}
 func Best(set []Package) Package {
 	var versionsMap map[string]Package = make(map[string]Package)
 	if len(set) == 0 {
@@ -454,6 +495,22 @@ func (pack *DefaultPackage) BuildFormula(definitiondb PackageDatabase, db Packag
 	A := bf.Var(encodedA)
 
 	var formulas []bf.Formula
+
+	// Do conflict with other packages versions (if A is selected, then conflict with other versions of A)
+	packages, _ := definitiondb.FindPackageVersions(p)
+	if len(packages) > 0 {
+		for _, cp := range packages {
+			encodedB, err := cp.Encode(db)
+			if err != nil {
+				return nil, err
+			}
+			B := bf.Var(encodedB)
+			if !p.Matches(cp) {
+				formulas = append(formulas, bf.Or(bf.Not(A), bf.Or(bf.Not(A), bf.Not(B))))
+			}
+		}
+	}
+
 	for _, requiredDef := range p.GetRequires() {
 		required, err := definitiondb.FindPackage(requiredDef)
 		if err != nil || requiredDef.IsSelector() {
@@ -465,62 +522,60 @@ func (pack *DefaultPackage) BuildFormula(definitiondb PackageDatabase, db Packag
 			if err != nil || len(packages) == 0 {
 				required = requiredDef
 			} else {
-				if len(packages) == 1 {
-					required = packages[0]
-				} else {
-					var ALO, priorityConstraints, priorityALO []bf.Formula
 
-					// Try to prio best match
-					// Force the solver to consider first our candidate (if does exists).
-					// Then builds ALO and AMO for the requires.
-					c, candidateErr := definitiondb.FindPackageCandidate(requiredDef)
-					var C bf.Formula
-					if candidateErr == nil {
-						// We have a desired candidate, try to look a solution with that included first
-						for _, o := range packages {
-							encodedB, err := o.Encode(db)
-							if err != nil {
-								return nil, err
-							}
-							B := bf.Var(encodedB)
-							if !o.Matches(c) {
-								priorityConstraints = append(priorityConstraints, bf.Not(B))
-								priorityALO = append(priorityALO, B)
-							}
-						}
-						encodedC, err := c.Encode(db)
-						if err != nil {
-							return nil, err
-						}
-						C = bf.Var(encodedC)
-						// Or the Candidate is true, or all the others might be not true
-						// This forces the CDCL sat implementation to look first at a solution with C=true
-						formulas = append(formulas, bf.Or(bf.Or(C, bf.Or(priorityConstraints...)), bf.Or(bf.Not(C), bf.Or(priorityALO...))))
-					}
+				var ALO, priorityConstraints, priorityALO []bf.Formula
 
-					// AMO - At most one
+				// Try to prio best match
+				// Force the solver to consider first our candidate (if does exists).
+				// Then builds ALO and AMO for the requires.
+				c, candidateErr := definitiondb.FindPackageCandidate(requiredDef)
+				var C bf.Formula
+				if candidateErr == nil {
+					// We have a desired candidate, try to look a solution with that included first
 					for _, o := range packages {
 						encodedB, err := o.Encode(db)
 						if err != nil {
 							return nil, err
 						}
 						B := bf.Var(encodedB)
-						ALO = append(ALO, B)
-						for _, i := range packages {
-							encodedI, err := i.Encode(db)
-							if err != nil {
-								return nil, err
-							}
-							I := bf.Var(encodedI)
-							if !o.Matches(i) {
-								formulas = append(formulas, bf.Or(bf.Not(I), bf.Not(B)))
-							}
+						if !o.Matches(c) {
+							priorityConstraints = append(priorityConstraints, bf.Not(B))
+							priorityALO = append(priorityALO, B)
 						}
 					}
-					formulas = append(formulas, bf.Or(ALO...)) // ALO - At least one
-					continue
+					encodedC, err := c.Encode(db)
+					if err != nil {
+						return nil, err
+					}
+					C = bf.Var(encodedC)
+					// Or the Candidate is true, or all the others might be not true
+					// This forces the CDCL sat implementation to look first at a solution with C=true
+					formulas = append(formulas, bf.Or(bf.Not(A), bf.Or(bf.Or(C, bf.Or(priorityConstraints...)), bf.Or(bf.Not(C), bf.Or(priorityALO...)))))
 				}
+
+				// AMO - At most one
+				for _, o := range packages {
+					encodedB, err := o.Encode(db)
+					if err != nil {
+						return nil, err
+					}
+					B := bf.Var(encodedB)
+					ALO = append(ALO, B)
+					for _, i := range packages {
+						encodedI, err := i.Encode(db)
+						if err != nil {
+							return nil, err
+						}
+						I := bf.Var(encodedI)
+						if !o.Matches(i) {
+							formulas = append(formulas, bf.Or(bf.Not(A), bf.Or(bf.Not(I), bf.Not(B))))
+						}
+					}
+				}
+				formulas = append(formulas, bf.Or(bf.Not(A), bf.Or(ALO...))) // ALO - At least one
+				continue
 			}
+
 		}
 
 		encodedB, err := required.Encode(db)
@@ -586,6 +641,7 @@ func (pack *DefaultPackage) BuildFormula(definitiondb PackageDatabase, db Packag
 		formulas = append(formulas, f...)
 
 	}
+
 	return formulas, nil
 }
 
@@ -608,3 +664,89 @@ func (p *DefaultPackage) Explain() {
 	fmt.Println("====================")
 
 }
+
+func (p *DefaultPackage) BumpBuildVersion() error {
+	cat := p.Category
+	if cat == "" {
+		// Use fake category for parse package
+		cat = "app"
+	}
+	gp, err := gentoo.ParsePackageStr(
+		fmt.Sprintf("%s/%s-%s", cat,
+			p.Name, p.GetVersion()))
+	if err != nil {
+		return errors.Wrap(err, "Error on parser version")
+	}
+
+	buildPrefix := ""
+	buildId := 0
+
+	if gp.VersionBuild != "" {
+		// Check if version build is a number
+		buildId, err = strconv.Atoi(gp.VersionBuild)
+		if err == nil {
+			goto end
+		}
+		// POST: is not only a number
+
+		// TODO: check if there is a better way to handle all use cases.
+
+		r1 := regexp.MustCompile(`^r[0-9]*$`)
+		if r1 == nil {
+			return errors.New("Error on create regex for -r[0-9]")
+		}
+		if r1.MatchString(gp.VersionBuild) {
+			buildId, err = strconv.Atoi(strings.ReplaceAll(gp.VersionBuild, "r", ""))
+			if err == nil {
+				buildPrefix = "r"
+				goto end
+			}
+		}
+
+		p1 := regexp.MustCompile(`^p[0-9]*$`)
+		if p1 == nil {
+			return errors.New("Error on create regex for -p[0-9]")
+		}
+		if p1.MatchString(gp.VersionBuild) {
+			buildId, err = strconv.Atoi(strings.ReplaceAll(gp.VersionBuild, "p", ""))
+			if err == nil {
+				buildPrefix = "p"
+				goto end
+			}
+		}
+
+		rc1 := regexp.MustCompile(`^rc[0-9]*$`)
+		if rc1 == nil {
+			return errors.New("Error on create regex for -rc[0-9]")
+		}
+		if rc1.MatchString(gp.VersionBuild) {
+			buildId, err = strconv.Atoi(strings.ReplaceAll(gp.VersionBuild, "rc", ""))
+			if err == nil {
+				buildPrefix = "rc"
+				goto end
+			}
+		}
+
+		// Check if version build contains a dot
+		dotIdx := strings.LastIndex(gp.VersionBuild, ".")
+		if dotIdx > 0 {
+			buildPrefix = gp.VersionBuild[0 : dotIdx+1]
+			bVersion := gp.VersionBuild[dotIdx+1:]
+			buildId, err = strconv.Atoi(bVersion)
+			if err == nil {
+				goto end
+			}
+		}
+
+		buildPrefix = gp.VersionBuild + "."
+		buildId = 0
+	}
+
+end:
+
+	buildId++
+	p.Version = fmt.Sprintf("%s%s+%s%d",
+		gp.Version, gp.VersionSuffix, buildPrefix, buildId)
+
+	return nil
+}

pkg/package/package_test.go

@@ -16,6 +16,8 @@
 package pkg_test
 
 import (
+	"regexp"
+
 	. "github.com/mudler/luet/pkg/package"
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
@@ -25,11 +27,18 @@ var _ = Describe("Package", func() {
 
 	Context("Encoding/Decoding", func() {
 		a := &DefaultPackage{Name: "test", Version: "1", Category: "t"}
+		a1 := NewPackage("A", "1.0", []*DefaultPackage{}, []*DefaultPackage{})
+
 		It("Encodes and decodes correctly", func() {
 			Expect(a.String()).ToNot(Equal(""))
 			p := FromString(a.String())
 			Expect(p).To(Equal(a))
 		})
+
+		It("Generates packages fingerprint's hashes", func() {
+			Expect(a.HashFingerprint()).ToNot(Equal(a1.HashFingerprint()))
+			Expect(a.HashFingerprint()).To(Equal("c64caa391b79adb598ad98e261aa79a0"))
+		})
 	})
 
 	Context("Simple package", func() {
@@ -54,6 +63,34 @@ var _ = Describe("Package", func() {
 		})
 	})
 
+	Context("Find label on packages", func() {
+		a := NewPackage("A", ">=1.0", []*DefaultPackage{}, []*DefaultPackage{})
+		a.AddLabel("project1", "test1")
+		a.AddLabel("label2", "value1")
+		b := NewPackage("B", "1.0", []*DefaultPackage{}, []*DefaultPackage{})
+		b.AddLabel("project2", "test2")
+		b.AddLabel("label2", "value1")
+		It("Expands correctly", func() {
+			var err error
+			definitions := NewInMemoryDatabase(false)
+			for _, p := range []Package{a, b} {
+				_, err = definitions.CreatePackage(p)
+				Expect(err).ToNot(HaveOccurred())
+			}
+			re := regexp.MustCompile("project[0-9][=].*")
+			Expect(err).ToNot(HaveOccurred())
+			Expect(re).ToNot(BeNil())
+			Expect(a.HasLabel("label2")).To(Equal(true))
+			Expect(a.HasLabel("label3")).To(Equal(false))
+			Expect(a.HasLabel("project1")).To(Equal(true))
+			Expect(b.HasLabel("project2")).To(Equal(true))
+			Expect(b.HasLabel("label2")).To(Equal(true))
+			Expect(b.MatchLabel(re)).To(Equal(true))
+			Expect(a.MatchLabel(re)).To(Equal(true))
+
+		})
+	})
+
 	Context("Check description", func() {
 		a := NewPackage("A", ">=1.0", []*DefaultPackage{}, []*DefaultPackage{})
 		a.SetDescription("Description A")
@@ -204,7 +241,7 @@ var _ = Describe("Package", func() {
 
 			f, err := a1.BuildFormula(definitions, db)
 			Expect(err).ToNot(HaveOccurred())
-			Expect(len(f)).To(Equal(2))
+			Expect(len(f)).To(Equal(8))
 			//	Expect(f[0].String()).To(Equal("or(not(c31f5842), a4910f77)"))
 			//	Expect(f[1].String()).To(Equal("or(not(c31f5842), not(a97670be))"))
 		})
@@ -245,4 +282,69 @@ var _ = Describe("Package", func() {
 			Expect(len(a1.GetUses())).To(Equal(0))
 		})
 	})
+
+	Context("Check Bump build Version", func() {
+		It("Bump without build version", func() {
+			a1 := NewPackage("A", "1.0", []*DefaultPackage{}, []*DefaultPackage{})
+			err := a1.BumpBuildVersion()
+			Expect(err).ToNot(HaveOccurred())
+			Expect(a1.GetVersion()).To(Equal("1.0+1"))
+		})
+		It("Bump 2", func() {
+			p := NewPackage("A", "1.0+1", []*DefaultPackage{}, []*DefaultPackage{})
+			err := p.BumpBuildVersion()
+			Expect(err).ToNot(HaveOccurred())
+			Expect(p.GetVersion()).To(Equal("1.0+2"))
+		})
+
+		It("Bump 3", func() {
+			p := NewPackage("A", "1.0+100", []*DefaultPackage{}, []*DefaultPackage{})
+			err := p.BumpBuildVersion()
+			Expect(err).ToNot(HaveOccurred())
+			Expect(p.GetVersion()).To(Equal("1.0+101"))
+		})
+
+		It("Bump 4", func() {
+			p := NewPackage("A", "1.0+r1", []*DefaultPackage{}, []*DefaultPackage{})
+			err := p.BumpBuildVersion()
+			Expect(err).ToNot(HaveOccurred())
+			Expect(p.GetVersion()).To(Equal("1.0+r2"))
+		})
+
+		It("Bump 5", func() {
+			p := NewPackage("A", "1.0+p1", []*DefaultPackage{}, []*DefaultPackage{})
+			err := p.BumpBuildVersion()
+			Expect(err).ToNot(HaveOccurred())
+			Expect(p.GetVersion()).To(Equal("1.0+p2"))
+		})
+
+		It("Bump 6", func() {
+			p := NewPackage("A", "1.0+pre20200315", []*DefaultPackage{}, []*DefaultPackage{})
+			err := p.BumpBuildVersion()
+			Expect(err).ToNot(HaveOccurred())
+			Expect(p.GetVersion()).To(Equal("1.0+pre20200315.1"))
+		})
+
+		It("Bump 7", func() {
+			p := NewPackage("A", "1.0+pre20200315.1", []*DefaultPackage{}, []*DefaultPackage{})
+			err := p.BumpBuildVersion()
+			Expect(err).ToNot(HaveOccurred())
+			Expect(p.GetVersion()).To(Equal("1.0+pre20200315.2"))
+		})
+
+		It("Bump 8", func() {
+			p := NewPackage("A", "1.0+d-r1", []*DefaultPackage{}, []*DefaultPackage{})
+			err := p.BumpBuildVersion()
+			Expect(err).ToNot(HaveOccurred())
+			Expect(p.GetVersion()).To(Equal("1.0+d-r1.1"))
+		})
+
+		It("Bump 9", func() {
+			p := NewPackage("A", "1.0+p20200315.1", []*DefaultPackage{}, []*DefaultPackage{})
+			err := p.BumpBuildVersion()
+			Expect(err).ToNot(HaveOccurred())
+			Expect(p.GetVersion()).To(Equal("1.0+p20200315.2"))
+		})
+	})
+
 })

pkg/package/version.go

@@ -161,6 +161,35 @@ func ParseVersion(v string) (PkgVersionSelector, error) {
 		ans.Condition = PkgCondNot
 	}
 
+	// Check if build number is present
+	buildIdx := strings.Index(v, "+")
+	buildVersion := ""
+	if buildIdx > 0 {
+		// <pre-release> ::= <dot-separated pre-release identifiers>
+		//
+		// <dot-separated pre-release identifiers> ::=
+		//      <pre-release identifier> | <pre-release identifier> "."
+		//      <dot-separated pre-release identifiers>
+		//
+		// <build> ::= <dot-separated build identifiers>
+		//
+		// <dot-separated build identifiers> ::= <build identifier>
+		//      | <build identifier> "." <dot-separated build identifiers>
+		//
+		// <pre-release identifier> ::= <alphanumeric identifier>
+		//                            | <numeric identifier>
+		//
+		// <build identifier> ::= <alphanumeric identifier>
+		//      | <digits>
+		//
+		// <alphanumeric identifier> ::= <non-digit>
+		//      | <non-digit> <identifier characters>
+		//      | <identifier characters> <non-digit>
+		//      | <identifier characters> <non-digit> <identifier characters>
+		buildVersion = v[buildIdx:]
+		v = v[0:buildIdx]
+	}
+
 	regexPkg := regexp.MustCompile(
 		fmt.Sprintf("(%s|%s|%s|%s|%s|%s)((%s|%s|%s|%s|%s|%s|%s)+)*$",
 			// Version regex
@@ -216,6 +245,8 @@ func ParseVersion(v string) (PkgVersionSelector, error) {
 		ans.Condition = PkgCondEqual
 	}
 
+	ans.Version += buildVersion
+
 	// NOTE: Now suffix complex like _alpha_rc1 are not supported.
 	return ans, nil
 }
@@ -225,15 +256,20 @@ func PackageAdmit(selector, i PkgVersionSelector) (bool, error) {
 	var v2 *version.Version = nil
 	var ans bool
 	var err error
+	var sanitizedSelectorVersion, sanitizedIVersion string
 
 	if selector.Version != "" {
-		v1, err = version.NewVersion(selector.Version)
+		// TODO: This is temporary!. I promise it.
+		sanitizedSelectorVersion = strings.ReplaceAll(selector.Version, "_", "-")
+
+		v1, err = version.NewVersion(sanitizedSelectorVersion)
 		if err != nil {
 			return false, err
 		}
 	}
 	if i.Version != "" {
-		v2, err = version.NewVersion(i.Version)
+		sanitizedIVersion = strings.ReplaceAll(i.Version, "_", "-")
+		v2, err = version.NewVersion(sanitizedIVersion)
 		if err != nil {
 			return false, err
 		}
@@ -259,7 +295,7 @@ func PackageAdmit(selector, i PkgVersionSelector) (bool, error) {
 			// TODO: case of 7.3* where 7.30 is accepted.
 			if v1 != nil && v2 != nil {
 				segments := v1.Segments()
-				n := strings.Count(selector.Version, ".")
+				n := strings.Count(sanitizedIVersion, ".")
 				switch n {
 				case 0:
 					segments[0]++
@@ -272,7 +308,7 @@ func PackageAdmit(selector, i PkgVersionSelector) (bool, error) {
 				}
 				nextVersion := strings.Trim(strings.Replace(fmt.Sprint(segments), " ", ".", -1), "[]")
 				constraints, err := version.NewConstraint(
-					fmt.Sprintf(">= %s, < %s", selector.Version, nextVersion),
+					fmt.Sprintf(">= %s, < %s", sanitizedSelectorVersion, nextVersion),
 				)
 				if err != nil {
 					return false, err

pkg/package/version_test.go

@@ -136,6 +136,72 @@ var _ = Describe("Versions", func() {
 		})
 	})
 
+	Context("Versions Parser11 - semver", func() {
+		v, err := ParseVersion("0.1.0+0")
+		It("ParseVersion10", func() {
+			var c PkgSelectorCondition = PkgCondEqual
+			Expect(err).Should(BeNil())
+			Expect(v.Version).Should(Equal("0.1.0+0"))
+			Expect(v.VersionSuffix).Should(Equal(""))
+			Expect(v.Condition).Should(Equal(c))
+		})
+	})
+
+	Context("Versions Parser12 - semver", func() {
+		v, err := ParseVersion(">=0.1.0_alpha+AB")
+		It("ParseVersion10", func() {
+			var c PkgSelectorCondition = PkgCondGreaterEqual
+			Expect(err).Should(BeNil())
+			Expect(v.Version).Should(Equal("0.1.0+AB"))
+			Expect(v.VersionSuffix).Should(Equal("_alpha"))
+			Expect(v.Condition).Should(Equal(c))
+		})
+	})
+
+	Context("Versions Parser13 - semver", func() {
+		v, err := ParseVersion(">=0.1.0_alpha+0.1.22")
+		It("ParseVersion10", func() {
+			var c PkgSelectorCondition = PkgCondGreaterEqual
+			Expect(err).Should(BeNil())
+			Expect(v.Version).Should(Equal("0.1.0+0.1.22"))
+			Expect(v.VersionSuffix).Should(Equal("_alpha"))
+			Expect(v.Condition).Should(Equal(c))
+		})
+	})
+
+	Context("Versions Parser14 - semver", func() {
+		v, err := ParseVersion(">=0.1.0_alpha+0.1.22")
+		It("ParseVersion10", func() {
+			var c PkgSelectorCondition = PkgCondGreaterEqual
+			Expect(err).Should(BeNil())
+			Expect(v.Version).Should(Equal("0.1.0+0.1.22"))
+			Expect(v.VersionSuffix).Should(Equal("_alpha"))
+			Expect(v.Condition).Should(Equal(c))
+		})
+	})
+
+	Context("Versions Parser15 - semver", func() {
+		v, err := ParseVersion("<=0.3.222.4.5+AB")
+		It("ParseVersion10", func() {
+			var c PkgSelectorCondition = PkgCondLessEqual
+			Expect(err).Should(BeNil())
+			Expect(v.Version).Should(Equal("0.3.222.4.5+AB"))
+			Expect(v.VersionSuffix).Should(Equal(""))
+			Expect(v.Condition).Should(Equal(c))
+		})
+	})
+
+	Context("Versions Parser16 - semver", func() {
+		v, err := ParseVersion("<=1.0.29+pre2_p20191024")
+		It("ParseVersion10", func() {
+			var c PkgSelectorCondition = PkgCondLessEqual
+			Expect(err).Should(BeNil())
+			Expect(v.Version).Should(Equal("1.0.29+pre2_p20191024"))
+			Expect(v.VersionSuffix).Should(Equal(""))
+			Expect(v.Condition).Should(Equal(c))
+		})
+	})
+
 	Context("Selector1", func() {
 		v1, err := ParseVersion(">=0.0.20190406.4.9.172-r1")
 		v2, err2 := ParseVersion("1.0.111")
@@ -184,6 +250,54 @@ var _ = Describe("Versions", func() {
 		})
 	})
 
+	Context("Selector5", func() {
+		v1, err := ParseVersion(">0.1.0+0.4")
+		v2, err2 := ParseVersion("0.1.0+0.3")
+		match, err3 := PackageAdmit(v1, v2)
+		It("Selector5", func() {
+			Expect(err).Should(BeNil())
+			Expect(err2).Should(BeNil())
+			Expect(err3).Should(BeNil())
+			Expect(match).Should(Equal(false))
+		})
+	})
+
+	Context("Selector6", func() {
+		v1, err := ParseVersion(">=0.1.0+0.4")
+		v2, err2 := ParseVersion("0.1.0+0.5")
+		match, err3 := PackageAdmit(v1, v2)
+		It("Selector6", func() {
+			Expect(err).Should(BeNil())
+			Expect(err2).Should(BeNil())
+			Expect(err3).Should(BeNil())
+			Expect(match).Should(Equal(true))
+		})
+	})
+
+	PContext("Selector7", func() {
+		v1, err := ParseVersion(">0.1.0+0.4")
+		v2, err2 := ParseVersion("0.1.0+0.5")
+		match, err3 := PackageAdmit(v1, v2)
+		It("Selector7", func() {
+			Expect(err).Should(BeNil())
+			Expect(err2).Should(BeNil())
+			Expect(err3).Should(BeNil())
+			Expect(match).Should(Equal(true))
+		})
+	})
+
+	Context("Selector8", func() {
+		v1, err := ParseVersion(">=0")
+		v2, err2 := ParseVersion("1.0.29+pre2_p20191024")
+		match, err3 := PackageAdmit(v1, v2)
+		It("Selector8", func() {
+			Expect(err).Should(BeNil())
+			Expect(err2).Should(BeNil())
+			Expect(err3).Should(BeNil())
+			Expect(match).Should(Equal(true))
+		})
+	})
+
 	Context("Condition Converter 1", func() {
 		gp, err := gentoo.ParsePackageStr("=layer/build-1.0")
 		var cond gentoo.PackageCond = gentoo.PkgCondEqual

pkg/repository/loader.go

@@ -35,7 +35,7 @@ func LoadRepositories(c *LuetConfig) error {
 
 		files, err := ioutil.ReadDir(rdir)
 		if err != nil {
-			Warning("Skip dir", rdir, ":", err.Error())
+			Debug("Skip dir", rdir, ":", err.Error())
 			continue
 		}
 

pkg/solver/solver.go

@@ -28,11 +28,11 @@ import (
 type PackageSolver interface {
 	SetDefinitionDatabase(pkg.PackageDatabase)
 	Install(p []pkg.Package) (PackagesAssertions, error)
-	Uninstall(candidate pkg.Package) ([]pkg.Package, error)
+	Uninstall(candidate pkg.Package, checkconflicts bool) ([]pkg.Package, error)
 	ConflictsWithInstalled(p pkg.Package) (bool, error)
 	ConflictsWith(p pkg.Package, ls []pkg.Package) (bool, error)
 	World() []pkg.Package
-	Upgrade() ([]pkg.Package, PackagesAssertions, error)
+	Upgrade(checkconflicts bool) ([]pkg.Package, PackagesAssertions, error)
 
 	SetResolver(PackageResolver)
 
@@ -210,7 +210,7 @@ func (s *Solver) ConflictsWithInstalled(p pkg.Package) (bool, error) {
 	return s.ConflictsWith(p, s.Installed())
 }
 
-func (s *Solver) Upgrade() ([]pkg.Package, PackagesAssertions, error) {
+func (s *Solver) Upgrade(checkconflicts bool) ([]pkg.Package, PackagesAssertions, error) {
 
 	// First get candidates that needs to be upgraded..
 
@@ -236,12 +236,11 @@ func (s *Solver) Upgrade() ([]pkg.Package, PackagesAssertions, error) {
 			}
 		}
 	}
-
 	s2 := NewSolver(installedcopy, s.DefinitionDatabase, pkg.NewInMemoryDatabase(false))
 	s2.SetResolver(s.Resolver)
 	// Then try to uninstall the versions in the system, and store that tree
 	for _, p := range toUninstall {
-		r, err := s.Uninstall(p)
+		r, err := s.Uninstall(p, checkconflicts)
 		if err != nil {
 			return nil, nil, errors.Wrap(err, "Could not compute upgrade - couldn't uninstall selected candidate "+p.GetFingerPrint())
 		}
@@ -262,7 +261,7 @@ func (s *Solver) Upgrade() ([]pkg.Package, PackagesAssertions, error) {
 
 // Uninstall takes a candidate package and return a list of packages that would be removed
 // in order to purge the candidate. Returns error if unsat.
-func (s *Solver) Uninstall(c pkg.Package) ([]pkg.Package, error) {
+func (s *Solver) Uninstall(c pkg.Package, checkconflicts bool) ([]pkg.Package, error) {
 	var res []pkg.Package
 	candidate, err := s.InstalledDatabase.FindPackage(c)
 	if err != nil {
@@ -294,17 +293,19 @@ func (s *Solver) Uninstall(c pkg.Package) ([]pkg.Package, error) {
 		}
 	}
 
+	s2 := NewSolver(pkg.NewInMemoryDatabase(false), s.DefinitionDatabase, pkg.NewInMemoryDatabase(false))
+	s2.SetResolver(s.Resolver)
 	// Get the requirements to install the candidate
-	saved := s.InstalledDatabase
-	s.InstalledDatabase = pkg.NewInMemoryDatabase(false)
-	asserts, err := s.Install([]pkg.Package{candidate})
+	asserts, err := s2.Install([]pkg.Package{candidate})
 	if err != nil {
 		return nil, err
 	}
-	s.InstalledDatabase = saved
-
 	for _, a := range asserts {
 		if a.Value {
+			if !checkconflicts {
+				res = append(res, a.Package.IsFlagged(false))
+				continue
+			}
 
 			c, err := s.ConflictsWithInstalled(a.Package)
 			if err != nil {

pkg/solver/solver_test.go

@@ -363,12 +363,19 @@ var _ = Describe("Solver", func() {
 		It("Selects best version", func() {
 
 			E := pkg.NewPackage("E", "", []*pkg.DefaultPackage{}, []*pkg.DefaultPackage{})
+			E.SetCategory("test")
 			C := pkg.NewPackage("C", "", []*pkg.DefaultPackage{}, []*pkg.DefaultPackage{})
+			C.SetCategory("test")
 			D2 := pkg.NewPackage("D", "1.9", []*pkg.DefaultPackage{}, []*pkg.DefaultPackage{})
+			D2.SetCategory("test")
 			D := pkg.NewPackage("D", "1.8", []*pkg.DefaultPackage{}, []*pkg.DefaultPackage{})
+			D.SetCategory("test")
 			D1 := pkg.NewPackage("D", "1.4", []*pkg.DefaultPackage{}, []*pkg.DefaultPackage{})
-			B := pkg.NewPackage("B", "1.1", []*pkg.DefaultPackage{&pkg.DefaultPackage{Name: "D", Version: ">=1.0"}}, []*pkg.DefaultPackage{})
-			A := pkg.NewPackage("A", "", []*pkg.DefaultPackage{&pkg.DefaultPackage{Name: "D", Version: ">=1.0"}}, []*pkg.DefaultPackage{})
+			D1.SetCategory("test")
+			B := pkg.NewPackage("B", "1.1", []*pkg.DefaultPackage{&pkg.DefaultPackage{Name: "D", Version: ">=1.0", Category: "test"}}, []*pkg.DefaultPackage{})
+			B.SetCategory("test")
+			A := pkg.NewPackage("A", "", []*pkg.DefaultPackage{&pkg.DefaultPackage{Name: "D", Version: ">=1.0", Category: "test"}}, []*pkg.DefaultPackage{})
+			A.SetCategory("test")
 
 			for _, p := range []pkg.Package{A, B, C, D, D1, D2, E} {
 				_, err := dbDefinitions.CreatePackage(p)
@@ -397,16 +404,23 @@ var _ = Describe("Solver", func() {
 		It("Support provides", func() {
 
 			E := pkg.NewPackage("E", "", []*pkg.DefaultPackage{}, []*pkg.DefaultPackage{})
-
+			E.SetCategory("test")
 			C := pkg.NewPackage("C", "", []*pkg.DefaultPackage{}, []*pkg.DefaultPackage{})
+			C.SetCategory("test")
 			D2 := pkg.NewPackage("D", "1.9", []*pkg.DefaultPackage{}, []*pkg.DefaultPackage{})
+			D2.SetCategory("test")
 			D := pkg.NewPackage("D", "1.8", []*pkg.DefaultPackage{}, []*pkg.DefaultPackage{})
+			D.SetCategory("test")
 			D1 := pkg.NewPackage("D", "1.4", []*pkg.DefaultPackage{}, []*pkg.DefaultPackage{})
-			B := pkg.NewPackage("B", "1.1", []*pkg.DefaultPackage{&pkg.DefaultPackage{Name: "D", Version: ">=1.0"}}, []*pkg.DefaultPackage{})
-			A := pkg.NewPackage("A", "", []*pkg.DefaultPackage{&pkg.DefaultPackage{Name: "D", Version: ">=1.0"}}, []*pkg.DefaultPackage{})
+			D1.SetCategory("test")
+			B := pkg.NewPackage("B", "1.1", []*pkg.DefaultPackage{&pkg.DefaultPackage{Name: "D", Version: ">=1.0", Category: "test"}}, []*pkg.DefaultPackage{})
+			B.SetCategory("test")
+			A := pkg.NewPackage("A", "", []*pkg.DefaultPackage{&pkg.DefaultPackage{Name: "D", Version: ">=1.0", Category: "test"}}, []*pkg.DefaultPackage{})
+			A.SetCategory("test")
 
-			D2.SetProvides([]*pkg.DefaultPackage{{Name: "E"}})
-			A2 := pkg.NewPackage("A", "1.3", []*pkg.DefaultPackage{&pkg.DefaultPackage{Name: "E", Version: ""}}, []*pkg.DefaultPackage{})
+			D2.SetProvides([]*pkg.DefaultPackage{{Name: "E", Category: "test"}})
+			A2 := pkg.NewPackage("A", "1.3", []*pkg.DefaultPackage{&pkg.DefaultPackage{Name: "E", Version: "", Category: "test"}}, []*pkg.DefaultPackage{})
+			A2.SetCategory("test")
 
 			for _, p := range []pkg.Package{A, B, C, D, D1, D2, A2, E} {
 				_, err := dbDefinitions.CreatePackage(p)
@@ -429,7 +443,7 @@ var _ = Describe("Solver", func() {
 			Expect(solution).To(ContainElement(PackageAssert{Package: D1, Value: false}))
 			Expect(solution).ToNot(ContainElement(PackageAssert{Package: E, Value: true}))
 
-			Expect(len(solution)).To(Equal(5))
+			Expect(len(solution)).To(Equal(6))
 			Expect(err).ToNot(HaveOccurred())
 		})
 
@@ -470,7 +484,7 @@ var _ = Describe("Solver", func() {
 			Expect(solution).To(ContainElement(PackageAssert{Package: D1, Value: false}))
 			Expect(solution).ToNot(ContainElement(PackageAssert{Package: E, Value: true}))
 
-			Expect(len(solution)).To(Equal(4))
+			Expect(len(solution)).To(Equal(6))
 			Expect(err).ToNot(HaveOccurred())
 		})
 
@@ -511,7 +525,7 @@ var _ = Describe("Solver", func() {
 			Expect(solution).To(ContainElement(PackageAssert{Package: D1, Value: false}))
 			Expect(solution).ToNot(ContainElement(PackageAssert{Package: E, Value: true}))
 
-			Expect(len(solution)).To(Equal(4))
+			Expect(len(solution)).To(Equal(6))
 			Expect(err).ToNot(HaveOccurred())
 		})
 
@@ -533,7 +547,7 @@ var _ = Describe("Solver", func() {
 			}
 			s = NewSolver(dbInstalled, dbDefinitions, db)
 
-			solution, err := s.Uninstall(A)
+			solution, err := s.Uninstall(A, true)
 			Expect(err).ToNot(HaveOccurred())
 
 			Expect(solution).To(ContainElement(A.IsFlagged(false)))
@@ -559,7 +573,7 @@ var _ = Describe("Solver", func() {
 			}
 			s = NewSolver(dbInstalled, dbDefinitions, db)
 
-			solution, err := s.Uninstall(&pkg.DefaultPackage{Name: "A", Version: ">1.0"})
+			solution, err := s.Uninstall(&pkg.DefaultPackage{Name: "A", Version: ">1.0"}, true)
 			Expect(err).ToNot(HaveOccurred())
 
 			Expect(solution).To(ContainElement(A.IsFlagged(false)))
@@ -674,7 +688,7 @@ var _ = Describe("Solver", func() {
 				_, err := dbInstalled.CreatePackage(p)
 				Expect(err).ToNot(HaveOccurred())
 			}
-			solution, err := s.Uninstall(A)
+			solution, err := s.Uninstall(A, true)
 			Expect(err).ToNot(HaveOccurred())
 
 			Expect(solution).To(ContainElement(A.IsFlagged(false)))
@@ -698,7 +712,7 @@ var _ = Describe("Solver", func() {
 				_, err := dbInstalled.CreatePackage(p)
 				Expect(err).ToNot(HaveOccurred())
 			}
-			solution, err := s.Uninstall(A)
+			solution, err := s.Uninstall(A, true)
 			Expect(err).ToNot(HaveOccurred())
 
 			Expect(solution).To(ContainElement(A.IsFlagged(false)))
@@ -721,7 +735,7 @@ var _ = Describe("Solver", func() {
 				_, err := dbInstalled.CreatePackage(p)
 				Expect(err).ToNot(HaveOccurred())
 			}
-			solution, err := s.Uninstall(A)
+			solution, err := s.Uninstall(A, true)
 			Expect(err).ToNot(HaveOccurred())
 
 			Expect(solution).To(ContainElement(A.IsFlagged(false)))
@@ -746,7 +760,7 @@ var _ = Describe("Solver", func() {
 				Expect(err).ToNot(HaveOccurred())
 			}
 
-			solution, err := s.Uninstall(A)
+			solution, err := s.Uninstall(A, true)
 			Expect(err).ToNot(HaveOccurred())
 
 			Expect(solution).To(ContainElement(A.IsFlagged(false)))
@@ -772,7 +786,7 @@ var _ = Describe("Solver", func() {
 				Expect(err).ToNot(HaveOccurred())
 			}
 
-			solution, err := s.Uninstall(A)
+			solution, err := s.Uninstall(A, true)
 			Expect(err).ToNot(HaveOccurred())
 
 			Expect(solution).To(ContainElement(A.IsFlagged(false)))
@@ -893,7 +907,7 @@ var _ = Describe("Solver", func() {
 				_, err := dbInstalled.CreatePackage(p)
 				Expect(err).ToNot(HaveOccurred())
 			}
-			uninstall, solution, err := s.Upgrade()
+			uninstall, solution, err := s.Upgrade(true)
 			Expect(err).ToNot(HaveOccurred())
 
 			Expect(len(uninstall)).To(Equal(1))

pkg/tree/builder.go

@@ -26,5 +26,5 @@ type Builder interface {
 	GetDatabase() pkg.PackageDatabase
 	WithDatabase(d pkg.PackageDatabase)
 
-	GetSourcePath() string
+	GetSourcePath() []string
 }

pkg/tree/compiler_recipe.go

@@ -38,6 +38,20 @@ func NewCompilerRecipe(d pkg.PackageDatabase) Builder {
 	return &CompilerRecipe{Recipe: Recipe{Database: d}}
 }
 
+func ReadDefinitionFile(path string) (pkg.DefaultPackage, error) {
+	empty := pkg.DefaultPackage{}
+	dat, err := ioutil.ReadFile(path)
+	if err != nil {
+		return empty, errors.Wrap(err, "Error reading file "+path)
+	}
+	pack, err := pkg.DefaultPackageFromYaml(dat)
+	if err != nil {
+		return empty, errors.Wrap(err, "Error reading yaml "+path)
+	}
+
+	return pack, nil
+}
+
 // Recipe is the "general" reciper for Trees
 type CompilerRecipe struct {
 	Recipe
@@ -45,7 +59,7 @@ type CompilerRecipe struct {
 
 func (r *CompilerRecipe) Load(path string) error {
 
-	r.SourcePath = path
+	r.SourcePath = append(r.SourcePath, path)
 	//tmpfile, err := ioutil.TempFile("", "luet")
 	//if err != nil {
 	//	return err
@@ -56,17 +70,17 @@ func (r *CompilerRecipe) Load(path string) error {
 	// the function that handles each file or dir
 	var ff = func(currentpath string, info os.FileInfo, err error) error {
 
+		if err != nil {
+			return errors.Wrap(err, "Error on walk path "+currentpath)
+		}
+
 		if info.Name() != DefinitionFile {
 			return nil // Skip with no errors
 		}
 
-		dat, err := ioutil.ReadFile(currentpath)
+		pack, err := ReadDefinitionFile(currentpath)
 		if err != nil {
-			return errors.Wrap(err, "Error reading file "+currentpath)
-		}
-		pack, err := pkg.DefaultPackageFromYaml(dat)
-		if err != nil {
-			return errors.Wrap(err, "Error reading yaml "+currentpath)
+			return err
 		}
 		// Path is set only internally when tree is loaded from disk
 		pack.SetPath(filepath.Dir(currentpath))
@@ -74,13 +88,17 @@ func (r *CompilerRecipe) Load(path string) error {
 		// Instead of rdeps, have a different tree for build deps.
 		compileDefPath := pack.Rel(CompilerDefinitionFile)
 		if helpers.Exists(compileDefPath) {
-			dat, err = ioutil.ReadFile(compileDefPath)
+			dat, err := ioutil.ReadFile(compileDefPath)
 			if err != nil {
-				return errors.Wrap(err, "Error reading file "+currentpath)
+				return errors.Wrap(err,
+					"Error reading file "+CompilerDefinitionFile+" from "+
+						filepath.Dir(currentpath))
 			}
 			packbuild, err := pkg.DefaultPackageFromYaml(dat)
 			if err != nil {
-				return errors.Wrap(err, "Error reading yaml "+currentpath)
+				return errors.Wrap(err,
+					"Error reading yaml "+CompilerDefinitionFile+" from "+
+						filepath.Dir(currentpath))
 			}
 			pack.Requires(packbuild.GetRequires())
 			pack.Conflicts(packbuild.GetConflicts())
@@ -103,4 +121,4 @@ func (r *CompilerRecipe) Load(path string) error {
 
 func (r *CompilerRecipe) GetDatabase() pkg.PackageDatabase   { return r.Database }
 func (r *CompilerRecipe) WithDatabase(d pkg.PackageDatabase) { r.Database = d }
-func (r *CompilerRecipe) GetSourcePath() string              { return r.SourcePath }
+func (r *CompilerRecipe) GetSourcePath() []string            { return r.SourcePath }

pkg/tree/installer_recipe.go

@@ -40,7 +40,7 @@ func NewInstallerRecipe(db pkg.PackageDatabase) Builder {
 
 // InstallerRecipe is the "general" reciper for Trees
 type InstallerRecipe struct {
-	SourcePath string
+	SourcePath []string
 	Database   pkg.PackageDatabase
 }
 
@@ -74,7 +74,7 @@ func (r *InstallerRecipe) Load(path string) error {
 	// if err != nil {
 	// 	return err
 	// }
-	r.SourcePath = path
+	r.SourcePath = append(r.SourcePath, path)
 
 	//r.Tree().SetPackageSet(pkg.NewBoltDatabase(tmpfile.Name()))
 	// TODO: Handle cleaning after? Cleanup implemented in GetPackageSet().Clean()
@@ -114,4 +114,4 @@ func (r *InstallerRecipe) Load(path string) error {
 
 func (r *InstallerRecipe) GetDatabase() pkg.PackageDatabase   { return r.Database }
 func (r *InstallerRecipe) WithDatabase(d pkg.PackageDatabase) { r.Database = d }
-func (r *InstallerRecipe) GetSourcePath() string              { return r.SourcePath }
+func (r *InstallerRecipe) GetSourcePath() []string            { return r.SourcePath }

pkg/tree/recipes.go

@@ -37,24 +37,32 @@ func NewGeneralRecipe(db pkg.PackageDatabase) Builder { return &Recipe{Database:
 
 // Recipe is the "general" reciper for Trees
 type Recipe struct {
-	SourcePath string
+	SourcePath []string
 	Database   pkg.PackageDatabase
 }
 
-func (r *Recipe) Save(path string) error {
+func WriteDefinitionFile(p pkg.Package, definitionFilePath string) error {
+	data, err := p.Yaml()
+	if err != nil {
+		return err
+	}
+	err = ioutil.WriteFile(definitionFilePath, data, 0644)
+	if err != nil {
+		return err
+	}
 
+	return nil
+}
+
+func (r *Recipe) Save(path string) error {
 	for _, p := range r.Database.World() {
 		dir := filepath.Join(path, p.GetCategory(), p.GetName(), p.GetVersion())
 		os.MkdirAll(dir, os.ModePerm)
-		data, err := p.Yaml()
-		if err != nil {
-			return err
-		}
-		err = ioutil.WriteFile(filepath.Join(dir, DefinitionFile), data, 0644)
-		if err != nil {
-			return err
-		}
 
+		err := WriteDefinitionFile(p, filepath.Join(dir, DefinitionFile))
+		if err != nil {
+			return err
+		}
 	}
 	return nil
 }
@@ -65,7 +73,7 @@ func (r *Recipe) Load(path string) error {
 	// if err != nil {
 	// 	return err
 	// }
-	r.SourcePath = path
+	r.SourcePath = append(r.SourcePath, path)
 
 	if r.Database == nil {
 		r.Database = pkg.NewInMemoryDatabase(false)
@@ -109,4 +117,4 @@ func (r *Recipe) Load(path string) error {
 
 func (r *Recipe) GetDatabase() pkg.PackageDatabase   { return r.Database }
 func (r *Recipe) WithDatabase(d pkg.PackageDatabase) { r.Database = d }
-func (r *Recipe) GetSourcePath() string              { return r.SourcePath }
+func (r *Recipe) GetSourcePath() []string            { return r.SourcePath }

pkg/tree/tree_test.go

@@ -96,4 +96,77 @@ var _ = Describe("Tree", func() {
 		})
 	})
 
+	Context("Multiple trees", func() {
+		It("Merges", func() {
+			for index := 0; index < 300; index++ { // Just to make sure we don't have false positives
+				db := pkg.NewInMemoryDatabase(false)
+				generalRecipe := NewCompilerRecipe(db)
+				tmpdir, err := ioutil.TempDir("", "package")
+				Expect(err).ToNot(HaveOccurred())
+				defer os.RemoveAll(tmpdir) // clean up
+
+				err = generalRecipe.Load("../../tests/fixtures/buildableseed")
+				Expect(err).ToNot(HaveOccurred())
+
+				Expect(len(generalRecipe.GetDatabase().World())).To(Equal(4))
+
+				err = generalRecipe.Load("../../tests/fixtures/layers")
+				Expect(err).ToNot(HaveOccurred())
+
+				Expect(len(generalRecipe.GetDatabase().World())).To(Equal(6))
+
+				extra, err := generalRecipe.GetDatabase().FindPackage(&pkg.DefaultPackage{Name: "extra", Category: "layer", Version: "1.0"})
+				Expect(err).ToNot(HaveOccurred())
+				Expect(extra).ToNot(BeNil())
+
+				D, err := generalRecipe.GetDatabase().FindPackage(&pkg.DefaultPackage{Name: "d", Category: "test", Version: "1.0"})
+				Expect(err).ToNot(HaveOccurred())
+
+				Expect(D.GetRequires()[0].GetName()).To(Equal("c"))
+				CfromD, err := generalRecipe.GetDatabase().FindPackage(D.GetRequires()[0])
+				Expect(err).ToNot(HaveOccurred())
+
+				Expect(len(CfromD.GetRequires()) != 0).To(BeTrue())
+				Expect(CfromD.GetRequires()[0].GetName()).To(Equal("b"))
+
+				s := solver.NewSolver(pkg.NewInMemoryDatabase(false), generalRecipe.GetDatabase(), db)
+
+				Dd, err := generalRecipe.GetDatabase().FindPackage(&pkg.DefaultPackage{Name: "d", Category: "test", Version: "1.0"})
+				Expect(err).ToNot(HaveOccurred())
+
+				solution, err := s.Install([]pkg.Package{Dd})
+				Expect(err).ToNot(HaveOccurred())
+
+				solution = solution.Order(generalRecipe.GetDatabase(), Dd.GetFingerPrint())
+				pack, err := generalRecipe.GetDatabase().FindPackage(&pkg.DefaultPackage{Name: "a", Category: "test", Version: "1.0"})
+				Expect(err).ToNot(HaveOccurred())
+
+				base, err := generalRecipe.GetDatabase().FindPackage(&pkg.DefaultPackage{Name: "base", Category: "layer", Version: "0.2"})
+				Expect(err).ToNot(HaveOccurred())
+				Expect(solution).To(ContainElement(solver.PackageAssert{Package: pack.(*pkg.DefaultPackage), Value: false}))
+				Expect(solution).To(ContainElement(solver.PackageAssert{Package: D.(*pkg.DefaultPackage), Value: true}))
+				Expect(solution).To(ContainElement(solver.PackageAssert{Package: extra.(*pkg.DefaultPackage), Value: false}))
+				Expect(solution).To(ContainElement(solver.PackageAssert{Package: base.(*pkg.DefaultPackage), Value: false}))
+				Expect(len(solution)).To(Equal(6))
+			}
+		})
+	})
+
+	Context("Simple tree with labels", func() {
+		It("Read tree with labels", func() {
+			db := pkg.NewInMemoryDatabase(false)
+			generalRecipe := NewCompilerRecipe(db)
+
+			err := generalRecipe.Load("../../tests/fixtures/labels")
+			Expect(err).ToNot(HaveOccurred())
+
+			Expect(len(generalRecipe.GetDatabase().World())).To(Equal(1))
+			pack, err := generalRecipe.GetDatabase().FindPackage(&pkg.DefaultPackage{Name: "pkgA", Category: "test", Version: "0.1"})
+			Expect(err).ToNot(HaveOccurred())
+
+			Expect(pack.HasLabel("label1")).To(Equal(true))
+			Expect(pack.HasLabel("label3")).To(Equal(false))
+		})
+	})
+
 })

tests/fixtures/labels/pkgA/0.1/build.yaml

@@ -0,0 +1,3 @@
+image: "alpine"
+steps:
+  - echo "test" > /file1

tests/fixtures/labels/pkgA/0.1/definition.yaml

@@ -0,0 +1,6 @@
+category: "test"
+name: "pkgA"
+version: "0.1"
+labels:
+  label1: "value1"
+  label2: "value2"

tests/fixtures/layered/layer/base/build.yaml

@@ -1,2 +1,2 @@
-image: "golang:alpine"
+image: "golang"
 unpack: true

tests/fixtures/layered/layer/extra/build.yaml

@@ -3,8 +3,8 @@ requires:
     name: "base"
     version: "0.1"
 prelude:
-- apk update
-- apk add git
+- apt-get update
+- apt-get install git
 - rm -rf /go/pkg/mod
 steps:
 - echo test > /extra-layer

tests/fixtures/layered/pkgs-checker/build.yaml

@@ -3,7 +3,7 @@ requires:
     name: "extra"
     version: "0.1"
 prelude:
-- apk add git
+- apt-get install git
 - mkdir -p /go/src/github.com/Sabayon/
 - git clone https://github.com/Sabayon/pkgs-checker /go/src/github.com/Sabayon/pkgs-checker
 steps:

tests/fixtures/upgrade_integration/c/build.yaml

@@ -0,0 +1,10 @@
+prelude:
+  - echo foo > /test
+  - echo bar > /test2
+steps:
+  - echo c > /c
+  - echo c > /cd
+requires:
+- category: "test"
+  name: "a"
+  version: ">=1.0"

tests/fixtures/upgrade_integration/c/definition.yaml

@@ -0,0 +1,9 @@
+category: "test"
+name: "c"
+version: "1.0"
+# Boom?
+
+requires:
+- category: "test"
+  name: "a"
+  version: ">=0.1"

tests/fixtures/upgrade_integration/cat/a/a/build.yaml

@@ -0,0 +1,11 @@
+image: "alpine"
+prelude:
+  - echo foo > /test
+  - echo bar > /test2
+steps:
+  - echo artifact3 > /test3
+  - echo artifact4 > /test4
+requires:
+- category: "test"
+  name: "b"
+  version: "1.0"

tests/fixtures/upgrade_integration/cat/a/a/definition.yaml

@@ -0,0 +1,8 @@
+category: "test"
+name: "a"
+version: "1.1"
+requires:
+- category: "test"
+  name: "b"
+  version: ">=0.1"
+

tests/fixtures/upgrade_integration/cat/a/a1.0/build.yaml

@@ -0,0 +1,11 @@
+image: "alpine"
+prelude:
+  - echo foo > /test
+  - echo bar > /test2
+steps:
+  - echo artifact3 > /testaa
+  - echo artifact4 > /testaa2
+requires:
+- category: "test"
+  name: "b"
+  version: "1.0"

tests/fixtures/upgrade_integration/cat/a/a1.0/definition.yaml

@@ -0,0 +1,3 @@
+category: "test"
+name: "a"
+version: "1.0"

tests/fixtures/upgrade_integration/cat/a/alatest/build.yaml

@@ -0,0 +1,11 @@
+image: "alpine"
+prelude:
+  - echo foo > /test
+  - echo bar > /test2
+steps:
+  - echo artifact3 > /testlatest
+  - echo artifact4 > /testlatest2
+requires:
+- category: "test"
+  name: "b"
+  version: "1.0"

tests/fixtures/upgrade_integration/cat/a/alatest/definition.yaml

@@ -0,0 +1,3 @@
+category: "test"
+name: "a"
+version: "1.2"

tests/fixtures/upgrade_integration/cat/b-1.1/build.yaml

@@ -0,0 +1,9 @@
+image: "alpine"
+prelude:
+  - echo foo > /test
+  - echo bar > /test2
+  - chmod +x generate.sh
+steps:
+  - echo artifact5 > /newc
+  - echo artifact6 > /newnewc
+  - ./generate.sh

tests/fixtures/upgrade_integration/cat/b-1.1/definition.yaml

@@ -0,0 +1,3 @@
+category: "test"
+name: "b"
+version: "1.1"

tests/fixtures/upgrade_integration/cat/b-1.1/generate.sh

@@ -0,0 +1 @@
+echo generated > /sonewc

tests/fixtures/upgrade_integration/cat/b/build.yaml

@@ -0,0 +1,9 @@
+image: "alpine"
+prelude:
+  - echo foo > /test
+  - echo bar > /test2
+  - chmod +x generate.sh
+steps:
+  - echo artifact5 > /test5
+  - echo artifact6 > /test6
+  - ./generate.sh

tests/fixtures/upgrade_integration/cat/b/definition.yaml

@@ -0,0 +1,3 @@
+category: "test"
+name: "b"
+version: "1.0"

tests/fixtures/upgrade_integration/cat/b/generate.sh

@@ -0,0 +1 @@
+echo generated > /artifact42

tests/integration/03_qlearning.sh

@@ -12,7 +12,7 @@ oneTimeTearDown() {
 
 testBuild() {
     mkdir $tmpdir/testbuild
-    luet build --all --tree "$ROOT_DIR/tests/fixtures/qlearning" --destination $tmpdir/testbuild --compression gzip
+    luet build --all --concurrency 1 --tree "$ROOT_DIR/tests/fixtures/qlearning" --destination $tmpdir/testbuild --compression gzip
     buildst=$?
     assertEquals 'builds successfully' "$buildst" "0"
     assertTrue 'create package dep B' "[ -e '$tmpdir/testbuild/b-test-1.0.package.tar.gz' ]"

tests/integration/05_upgrade.sh

@@ -0,0 +1,122 @@
+#!/bin/bash
+
+export LUET_NOLOCK=true
+
+oneTimeSetUp() {
+export tmpdir="$(mktemp -d)"
+}
+
+oneTimeTearDown() {
+    rm -rf "$tmpdir"
+}
+
+testBuild() {
+    mkdir $tmpdir/testbuild
+    luet build --tree "$ROOT_DIR/tests/fixtures/upgrade_integration" --destination $tmpdir/testbuild --compression gzip test/b-1.0 
+    buildst=$?
+    assertTrue 'create package B 1.0' "[ -e '$tmpdir/testbuild/b-test-1.0.package.tar.gz' ]"
+    assertEquals 'builds successfully' "$buildst" "0"
+
+    luet build --tree "$ROOT_DIR/tests/fixtures/upgrade_integration" --destination $tmpdir/testbuild --compression gzip test/b-1.1
+    buildst=$?
+    assertEquals 'builds successfully' "$buildst" "0"
+    assertTrue 'create package B 1.1' "[ -e '$tmpdir/testbuild/b-test-1.1.package.tar.gz' ]"
+
+    luet build --tree "$ROOT_DIR/tests/fixtures/upgrade_integration" --destination $tmpdir/testbuild --compression gzip test/a-1.0 
+    buildst=$?
+    assertEquals 'builds successfully' "$buildst" "0"
+    assertTrue 'create package A 1.0' "[ -e '$tmpdir/testbuild/a-test-1.0.package.tar.gz' ]"
+
+    luet build --tree "$ROOT_DIR/tests/fixtures/upgrade_integration" --destination $tmpdir/testbuild --compression gzip test/a-1.1
+    buildst=$?
+    assertEquals 'builds successfully' "$buildst" "0"
+
+    assertTrue 'create package A 1.1' "[ -e '$tmpdir/testbuild/a-test-1.1.package.tar.gz' ]"
+
+    luet build --tree "$ROOT_DIR/tests/fixtures/upgrade_integration" --destination $tmpdir/testbuild --compression gzip test/a-1.2
+    buildst=$?
+    assertEquals 'builds successfully' "$buildst" "0"
+
+    assertTrue 'create package A 1.2' "[ -e '$tmpdir/testbuild/a-test-1.2.package.tar.gz' ]"
+
+
+    luet build --tree "$ROOT_DIR/tests/fixtures/upgrade_integration" --destination $tmpdir/testbuild --compression gzip test/c-1.0
+    buildst=$?
+    assertEquals 'builds successfully' "$buildst" "0"
+    assertTrue 'create package C 1.0' "[ -e '$tmpdir/testbuild/c-test-1.0.package.tar.gz' ]"
+
+}
+
+testRepo() {
+    assertTrue 'no repository' "[ ! -e '$tmpdir/testbuild/repository.yaml' ]"
+    luet create-repo --tree "$ROOT_DIR/tests/fixtures/upgrade_integration" \
+    --output $tmpdir/testbuild \
+    --packages $tmpdir/testbuild \
+    --name "test" \
+    --descr "Test Repo" \
+    --urls $tmpdir/testrootfs \
+    --type disk
+
+    createst=$?
+    assertEquals 'create repo successfully' "$createst" "0"
+    assertTrue 'create repository' "[ -e '$tmpdir/testbuild/repository.yaml' ]"
+}
+
+testConfig() {
+    mkdir $tmpdir/testrootfs
+    cat <<EOF > $tmpdir/luet.yaml
+general:
+  debug: true
+system:
+  rootfs: $tmpdir/testrootfs
+  database_path: "/"
+  database_engine: "boltdb"
+repositories:
+   - name: "main"
+     type: "disk"
+     enable: true
+     urls:
+       - "$tmpdir/testbuild"
+EOF
+    luet config --config $tmpdir/luet.yaml
+    res=$?
+    assertEquals 'config test successfully' "$res" "0"
+}
+
+testInstall() {
+    luet install --config $tmpdir/luet.yaml test/b-1.0
+    installst=$?
+    assertEquals 'install test successfully' "$installst" "0"
+    assertTrue 'package installed B' "[ -e '$tmpdir/testrootfs/test5' ]"
+
+    luet install --config $tmpdir/luet.yaml test/a-1.0
+    assertTrue 'package installed A' "[ -e '$tmpdir/testrootfs/testaa' ]"
+    installst=$?
+    assertEquals 'install test successfully' "$installst" "0"
+
+    luet install --config $tmpdir/luet.yaml test/a-1.1
+    assertTrue 'package installed A' "[ -e '$tmpdir/testrootfs/testaa' ]"
+    installst=$?
+    assertEquals 'install test successfully' "$installst" "0"
+    assertTrue 'package keeps old A' "[ -e '$tmpdir/testrootfs/testaa' ]"
+    assertTrue 'package new A was not installed' "[ ! -e '$tmpdir/testrootfs/testlatest' ]"
+
+    luet install --config $tmpdir/luet.yaml test/c-1.0
+    installst=$?
+    assertEquals 'install test successfully' "$installst" "0"
+    assertTrue 'package installed C' "[ -e '$tmpdir/testrootfs/c' ]"
+}
+
+testUpgrade() {
+    luet --config $tmpdir/luet.yaml upgrade
+    installst=$?
+    assertEquals 'install test successfully' "$installst" "0"
+    assertTrue 'package uninstalled B' "[ ! -e '$tmpdir/testrootfs/test5' ]"
+    assertTrue 'package installed B' "[ -e '$tmpdir/testrootfs/newc' ]"
+    assertTrue 'package uninstalled A' "[ ! -e '$tmpdir/testrootfs/testaa' ]"
+    assertTrue 'package installed new A' "[ -e '$tmpdir/testrootfs/testlatest' ]"
+}
+
+# Load shUnit2.
+. "$ROOT_DIR/tests/integration/shunit2"/shunit2
+

vendor/github.com/Sabayon/pkgs-checker/pkg/gentoo/pkg.go

@@ -54,15 +54,22 @@ const (
 	PkgCondMatchVersion = 8
 )
 
+const (
+	RegexCatString     = `(^[a-z]+[0-9]*[a-z]*[-]*[a-z]+[0-9]*[a-z]*|^virtual)`
+	RegexPkgNameString = `([a-zA-Z]*[0-9a-zA-Z\.\-_]*[a-zA-Z0-9]+|[a-zA-Z]+[+]+)`
+)
+
 type GentooPackage struct {
 	Name          string `json:"name",omitempty"`
 	Category      string `json:"category",omitempty"`
 	Version       string `json:"version",omitempty"`
 	VersionSuffix string `json:"version_suffix",omitempty"`
+	VersionBuild  string `json:"version_build",omitempty"`
 	Slot          string `json:"slot",omitempty"`
 	Condition     PackageCond
 	Repository    string   `json:"repository",omitempty"`
 	UseFlags      []string `json:"use_flags",omitempty"`
+	License       string   `json:"license",omitempty"`
 }
 
 func (p *GentooPackage) String() string {
@@ -191,14 +198,23 @@ func (p *GentooPackage) Admit(i *GentooPackage) (bool, error) {
 			fmt.Sprintf("Wrong name for package %s", i.Name))
 	}
 
-	if p.Version != "" {
-		v1, err = version.NewVersion(p.Version)
+	v1s := p.Version
+	v2s := i.Version
+
+	if v1s != "" {
+		if p.VersionBuild != "" {
+			v1s = p.Version + "+" + p.VersionBuild
+		}
+		v1, err = version.NewVersion(v1s)
 		if err != nil {
 			return false, err
 		}
 	}
-	if i.Version != "" {
-		v2, err = version.NewVersion(i.Version)
+	if v2s != "" {
+		if i.VersionBuild != "" {
+			v2s = i.Version + "+" + i.VersionBuild
+		}
+		v2, err = version.NewVersion(v2s)
 		if err != nil {
 			return false, err
 		}
@@ -210,7 +226,8 @@ func (p *GentooPackage) Admit(i *GentooPackage) (bool, error) {
 	} else {
 		if p.Condition == PkgCondInvalid || p.Condition == PkgCondEqual {
 			// case 1: source-pkg-1.0 and dest-pkg-1.0 or dest-pkg without version
-			if i.Version != "" && i.Version == p.Version && p.VersionSuffix == i.VersionSuffix {
+			if i.Version != "" && i.Version == p.Version && p.VersionSuffix == i.VersionSuffix &&
+				p.VersionBuild == i.VersionBuild {
 				ans = true
 			}
 		} else if p.Condition == PkgCondAnyRevision {
@@ -270,8 +287,9 @@ func ParsePackageStr(pkg string) (*GentooPackage, error) {
 	}
 
 	ans := GentooPackage{
-		Slot:      "0",
-		Condition: PkgCondInvalid,
+		Slot:         "0",
+		Condition:    PkgCondInvalid,
+		VersionBuild: "",
 	}
 
 	// Check if pkg string contains inline use flags
@@ -315,6 +333,67 @@ func ParsePackageStr(pkg string) (*GentooPackage, error) {
 		ans.Condition = PkgCondNot
 	}
 
+	regexVerString := fmt.Sprintf("[-](%s|%s|%s|%s|%s|%s)((%s|%s|%s|%s|%s|%s|%s)+)*",
+		// Version regex
+		// 1.1
+		"[0-9]+[.][0-9]+[a-z]*",
+		// 1
+		"[0-9]+[a-z]*",
+		// 1.1.1
+		"[0-9]+[.][0-9]+[.][0-9]+[a-z]*",
+		// 1.1.1.1
+		"[0-9]+[.][0-9]+[.][0-9]+[.][0-9]+[a-z]*",
+		// 1.1.1.1.1
+		"[0-9]+[.][0-9]+[.][0-9]+[.][0-9]+[.][0-9]+[a-z]*",
+		// 1.1.1.1.1.1
+		"[0-9]+[.][0-9]+[.][0-9]+[.][0-9]+[.][0-9]+[.][0-9]+[a-z]*",
+		// suffix
+		"-r[0-9]+",
+		"_p[0-9]+",
+		"_pre[0-9]*",
+		"_rc[0-9]+",
+		// handle also rc without number
+		"_rc",
+		"_alpha",
+		"_beta",
+	)
+
+	hasBuild, _ := regexp.MatchString(
+		fmt.Sprintf("(%s[/]%s%s([[:]{1,2}[0-9a-zA-Z]*]*)*[+])",
+			RegexCatString, RegexPkgNameString, regexVerString),
+		pkg,
+	)
+
+	if hasBuild {
+		// Check if build number is present
+		buildIdx := strings.LastIndex(pkg, "+")
+		if buildIdx > 0 {
+			// <pre-release> ::= <dot-separated pre-release identifiers>
+			//
+			// <dot-separated pre-release identifiers> ::=
+			//      <pre-release identifier> | <pre-release identifier> "."
+			//      <dot-separated pre-release identifiers>
+			//
+			// <build> ::= <dot-separated build identifiers>
+			//
+			// <dot-separated build identifiers> ::= <build identifier>
+			//      | <build identifier> "." <dot-separated build identifiers>
+			//
+			// <pre-release identifier> ::= <alphanumeric identifier>
+			//                            | <numeric identifier>
+			//
+			// <build identifier> ::= <alphanumeric identifier>
+			//      | <digits>
+			//
+			// <alphanumeric identifier> ::= <non-digit>
+			//      | <non-digit> <identifier characters>
+			//      | <identifier characters> <non-digit>
+			//      | <identifier characters> <non-digit> <identifier characters>
+			ans.VersionBuild = pkg[buildIdx+1:]
+			pkg = pkg[0:buildIdx]
+		}
+	}
+
 	words := strings.Split(pkg, "/")
 	if len(words) != 2 {
 		return nil, errors.New(fmt.Sprintf("Invalid package string %s", pkg))
@@ -337,31 +416,9 @@ func ParsePackageStr(pkg string) (*GentooPackage, error) {
 	}
 
 	regexPkg := regexp.MustCompile(
-		fmt.Sprintf("[-](%s|%s|%s|%s|%s|%s)((%s|%s|%s|%s|%s|%s|%s)+)*$",
-			// Version regex
-			// 1.1
-			"[0-9]+[.][0-9]+[a-z]*",
-			// 1
-			"[0-9]+[a-z]*",
-			// 1.1.1
-			"[0-9]+[.][0-9]+[.][0-9]+[a-z]*",
-			// 1.1.1.1
-			"[0-9]+[.][0-9]+[.][0-9]+[.][0-9]+[a-z]*",
-			// 1.1.1.1.1
-			"[0-9]+[.][0-9]+[.][0-9]+[.][0-9]+[.][0-9]+[a-z]*",
-			// 1.1.1.1.1.1
-			"[0-9]+[.][0-9]+[.][0-9]+[.][0-9]+[.][0-9]+[.][0-9]+[a-z]*",
-			// suffix
-			"-r[0-9]+",
-			"_p[0-9]+",
-			"_pre[0-9]*",
-			"_rc[0-9]+",
-			// handle also rc without number
-			"_rc",
-			"_alpha",
-			"_beta",
-		),
+		fmt.Sprintf("%s$", regexVerString),
 	)
+
 	matches := regexPkg.FindAllString(pkgname, -1)
 
 	// NOTE: Now suffix comples like _alpha_rc1 are not supported.

vendor/modules.txt

@@ -23,7 +23,7 @@ github.com/Microsoft/hcsshim/internal/longpath
 github.com/Microsoft/hcsshim/internal/safefile
 # github.com/Nvveen/Gotty v0.0.0-20120604004816-cd527374f1e5
 github.com/Nvveen/Gotty
-# github.com/Sabayon/pkgs-checker v0.4.2-0.20200101193228-1d500105afb7
+# github.com/Sabayon/pkgs-checker v0.6.2-0.20200315232328-b6efed54b4b1
 github.com/Sabayon/pkgs-checker/pkg/gentoo
 # github.com/apex/log v1.1.1
 github.com/apex/log