diff --git a/pkg/package/package.go b/pkg/package/package.go
index 8825b7a0..cc97c305 100644
--- a/pkg/package/package.go
+++ b/pkg/package/package.go
@@ -41,6 +41,10 @@ type Package interface {
 	GetName() string
 	GetVersion() string
 	RequiresContains(Package) bool
+
+	AddUse(use string)
+	RemoveUse(use string)
+	GetUses() []string
 }
 
 // DefaultPackage represent a standard package definition
@@ -112,6 +116,10 @@ func (p *DefaultPackage) GetVersion() string {
 	return p.Version
 }
 
+func (p *DefaultPackage) GetUses() []string {
+	return p.UseFlags
+}
+
 func (p *DefaultPackage) GetRequires() []*DefaultPackage {
 	return p.PackageRequires
 }
diff --git a/pkg/package/package_test.go b/pkg/package/package_test.go
index 7daef4ac..000e04cc 100644
--- a/pkg/package/package_test.go
+++ b/pkg/package/package_test.go
@@ -89,7 +89,9 @@ var _ = Describe("Package", func() {
 		It("builds constraints correctly", func() {
 			a11 := NewPackage("A", "1.1", []*DefaultPackage{}, []*DefaultPackage{})
 			a21 := NewPackage("A", "1.2", []*DefaultPackage{}, []*DefaultPackage{})
-			a1 := NewPackage("A", "1.0", []*DefaultPackage{a11}, []*DefaultPackage{a21})
+			a1 := NewPackage("A", "1.0", []*DefaultPackage{}, []*DefaultPackage{})
+			a1.Requires([]*DefaultPackage{a11})
+			a1.Conflicts([]*DefaultPackage{a21})
 			f, err := a1.BuildFormula()
 			Expect(err).ToNot(HaveOccurred())
 			Expect(len(f)).To(Equal(2))
@@ -118,4 +120,19 @@ var _ = Describe("Package", func() {
 		})
 
 	})
+
+	Context("Useflags", func() {
+		a1 := NewPackage("A", "1.0", []*DefaultPackage{}, []*DefaultPackage{})
+		It("Adds correctly", func() {
+			a1.AddUse("test")
+			Expect(a1.GetUses()[0]).To(Equal("test"))
+		})
+		It("Removes correctly", func() {
+			Expect(len(a1.GetUses())).To(Equal(1))
+			a1.RemoveUse("foo")
+			Expect(len(a1.GetUses())).To(Equal(1))
+			a1.RemoveUse("test")
+			Expect(len(a1.GetUses())).To(Equal(0))
+		})
+	})
 })