fixed links being incorrect

internal/cache/cache.go

@@ -93,7 +93,7 @@ func checkSymLinks(cr *os.Root, repos []string) error {
 			return err
 		}
 		lnPath := filepath.Join(dirPath, repo+".db")
-		srcPath := filepath.Join(dirPath, repo+".db.tar.gz")
+		srcPath := repo + ".db.tar.gz"
 		if _, err := cr.Lstat(lnPath); err == nil {
 			continue // link exists
 		}

internal/cache/cache_test.go

@@ -223,7 +223,7 @@ func TestCreateSymlinks(t *testing.T) {
 
 	for _, repo := range repos {
 		lnfile := filepath.Join(repo, "os/x86_64", repo+".db")
-		expected := lnfile + ".tar.gz"
+		expected := repo + ".db.tar.gz"
 		lnval, err := cr.Readlink(lnfile)
 		if err != nil {
 			t.Errorf("%s has no link: %v", repo, err)