diff --git a/internal/mk/mk.go b/internal/mk/mk.go
index b9681dd..6321e56 100644
--- a/internal/mk/mk.go
+++ b/internal/mk/mk.go
@@ -16,21 +16,8 @@ import (
 	"github.com/spf13/viper"
 )
 
-var pkgEnv = func(pkg *Package) map[string]string {
-	return map[string]string{
-		"PACKAGE_ORIGIN":     pkg.Origin,
-		"PACKAGE_VERSION":    pkg.Version,
-		"PACKAGE_LATEST":     pkg.Latest,
-		"PACKAGE_MAINTAINER": pkg.Maintainer,
-		"PACKAGE_TYPE":       pkg.Type,
-		"PACKAGE_DIR":        CleanPath(viper.GetString("base")) + pkg.Origin,
-	}
-}
-
 func run(pkg *Package, makefile string) {
-	for k, v := range pkgEnv(pkg) {
-		os.Setenv(k, v)
-	}
+	SetPkgEnv(pkg)
 	scriptDir := CleanPath(viper.GetString("scriptdir"))
 	args := strings.Fields("make -f" + scriptDir + makefile)
 	cmd := exec.Command(args[0], args[1:]...)
diff --git a/internal/util/util.go b/internal/util/util.go
index bfef637..13d506e 100644
--- a/internal/util/util.go
+++ b/internal/util/util.go
@@ -4,6 +4,9 @@ import (
 	"os"
 	"path/filepath"
 	"strings"
+
+	. "github.com/lcook/portsync/internal/_package"
+	"github.com/spf13/viper"
 )
 
 func CleanPath(path string) string {
@@ -17,3 +20,22 @@ func CleanPath(path string) string {
 	}
 	return tmp
 }
+
+var (
+	PkgEnv = func(pkg *Package) map[string]string {
+		return map[string]string{
+			"PACKAGE_ORIGIN":     pkg.Origin,
+			"PACKAGE_VERSION":    pkg.Version,
+			"PACKAGE_LATEST":     pkg.Latest,
+			"PACKAGE_MAINTAINER": pkg.Maintainer,
+			"PACKAGE_TYPE":       pkg.Type,
+			"PACKAGE_DIR":        CleanPath(viper.GetString("base")) + pkg.Origin,
+			"PACKAGE_ROOT":       CleanPath(viper.GetString("base")),
+		}
+	}
+	SetPkgEnv = func(pkg *Package) {
+		for k, v := range PkgEnv(pkg) {
+			os.Setenv(k, v)
+		}
+	}
+)