installpkg: avoid modifying /install if it exists

Avoid modifying and removing the /install directory if it already exists
on the system by exiting early.

1 files changed, 6 insertions, 1 deletions

diff --git a/installpkg.go b/installpkg.go
index 7933960..a6e327e 100644
--- a/installpkg.go
+++ b/installpkg.go
@@ -295,6 +295,12 @@ func InstallPkg(flags *InstallPkgFlags, pkgs ...string) error {
 		return err
 	}
 
+	installPath := path.Join(flags.Root, PackageInstallPath)
+	fmt.Println(installPath)
+	if _, err := os.Stat(installPath); !errors.Is(err, os.ErrNotExist) {
+		return errors.Errorf("The '%s' directory exists and would be used by installpkg and removed.  Please consider renaming the directory or using Slackware's installpkg.", installPath)
+	}
+
 	for _, pkg := range pkgs {
 		fmt.Printf("installing %s\n", PackageBase(pkg))
 		err = writeToDatabase(flags.Root, pkg)
@@ -336,7 +342,6 @@ func InstallPkg(flags *InstallPkgFlags, pkgs ...string) error {
 			fmt.Fprintln(os.Stderr, errors.Wrap(err, "running install script"))
 		}
 
-		installPath := path.Join(flags.Root, PackageInstallPath)
 		err = os.RemoveAll(installPath)
 		if err != nil {
 			return err