Don't hardcode the version (#353)

and add a `version` command that only prints the version (without the
build time)

Signed-off-by: Dimitris Karakasilis <dimitris@karakasilis.me>

.goreleaser.yml

@@ -13,8 +13,8 @@ builds:
       - CGO_ENABLED=0
     ldflags:
       - -s -w
+      - -X "github.com/mudler/luet/cmd.Version={{ .Summary }}"
       - -X "github.com/mudler/luet/cmd.BuildTime={{ time "2006-01-02 15:04:05 MST" }}"
-      - -X "github.com/mudler/luet/cmd.BuildCommit={{ .FullCommit }}"
     goos:
       - linux
     goarch:
@@ -40,4 +40,4 @@ release:
     Luet is a multi-platform Package Manager based off from containers - it uses Docker (and others) to build packages.
 
     It has zero dependencies and it is well suitable for "from scratch" environments.
-    It can also version entire rootfs and enables delivery of OTA-alike updates, making it a perfect fit for the Edge computing era and IoT embedded device
+    It can also version entire rootfs and enables delivery of OTA-alike updates, making it a perfect fit for the Edge computing era and IoT embedded device

Makefile

@@ -1,7 +1,7 @@
 
 # go tool nm ./luet | grep Commit
 override LDFLAGS += -X "github.com/mudler/luet/cmd.BuildTime=$(shell date -u '+%Y-%m-%d %I:%M:%S %Z')"
-override LDFLAGS += -X "github.com/mudler/luet/cmd.BuildCommit=$(shell git rev-parse HEAD)"
+override LDFLAGS += -X "github.com/mudler/luet/cmd.Version=$(shell git describe --dirty --always --tags)"
 
 NAME ?= luet
 PACKAGE_NAME ?= $(NAME)

cmd/root.go

@@ -30,8 +30,7 @@ var cfgFile string
 var Verbose bool
 
 const (
-	LuetCLIVersion = "0.34.0"
-	LuetEnvPrefix  = "LUET"
+	LuetEnvPrefix = "LUET"
 )
 
 var license = []string{
@@ -45,12 +44,12 @@ var license = []string{
 //
 // ⚠️ WARNING: should only be set by "-ldflags".
 var (
-	BuildTime   string
-	BuildCommit string
+	BuildTime string
+	Version   = "0.0.0"
 )
 
 func version() string {
-	return fmt.Sprintf("%s-g%s %s", LuetCLIVersion, BuildCommit, BuildTime)
+	return fmt.Sprintf("%s (Build time: %s)", Version, BuildTime)
 }
 
 // RootCmd represents the base command when called without any subcommands

cmd/version.go

@@ -0,0 +1,19 @@
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+)
+
+func init() {
+	RootCmd.AddCommand(versionCmd)
+}
+
+var versionCmd = &cobra.Command{
+	Use:   "version",
+	Short: "Print the version of luet",
+	Run: func(cmd *cobra.Command, args []string) {
+		fmt.Println(Version)
+	},
+}

go.sum

@@ -37,6 +37,8 @@ cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohl
 cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RXyy7KQOVs=
 cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
+github.com/AdaLogics/go-fuzz-headers v0.0.0-20230811130428-ced1acdcaa24 h1:bvDV9vkmnHYOMsOr4WLk+Vo07yKIzd94sVoIqshQ4bU=
+github.com/AdaLogics/go-fuzz-headers v0.0.0-20230811130428-ced1acdcaa24/go.mod h1:8o94RPi1/7XTJvwPpRSzSUedZrtlirdB3r9Z20bi2f8=
 github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1 h1:UQHMgLO+TxOElx5B5HZ4hJQsoJ/PvUvKRhJHDQXO8P8=
 github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1/go.mod h1:xomTg63KZ2rFqZQzSB4Vz2SUXa1BpHTVz9L5PTmPC4E=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
@@ -439,8 +441,6 @@ github.com/mitchellh/reflectwalk v1.0.2 h1:G2LzWKi524PWgd3mLHV8Y5k7s6XUvT0Gef6zx
 github.com/mitchellh/reflectwalk v1.0.2/go.mod h1:mSTlrgnPZtwu0c4WaC2kGObEpuNDbx0jmZXqmk4esnw=
 github.com/moby/buildkit v0.13.0 h1:reVR1Y+rbNIUQ9jf0Q1YZVH5a/nhOixZsl+HJ9qQEGI=
 github.com/moby/buildkit v0.13.0/go.mod h1:aNmNQKLBFYAOFuzQjR3VA27/FijlvtBD1pjNwTSN37k=
-github.com/moby/moby v20.10.9+incompatible h1:fzBLeWWduR/GQCWZe6MDL8t8qKr6Nhpgd2sLzhdVBuk=
-github.com/moby/moby v20.10.9+incompatible/go.mod h1:fDXVQ6+S340veQPv35CzDahGBmHsiclFwfEygB/TWMc=
 github.com/moby/moby v25.0.4+incompatible h1:vea1J80wDM5x5geaZSaywFkfFxLABJIQ3mmR4ewZGbU=
 github.com/moby/moby v25.0.4+incompatible/go.mod h1:fDXVQ6+S340veQPv35CzDahGBmHsiclFwfEygB/TWMc=
 github.com/moby/patternmatcher v0.6.0 h1:GmP9lR19aU5GqSSFko+5pRqHi+Ohk1O69aFiKkVGiPk=

main.go

@@ -2,10 +2,6 @@ package main
 
 import "github.com/mudler/luet/cmd"
 
-var (
-	version string
-)
-
 func main() {
 	cmd.Execute()
 }