diff --git a/pkgs/lib/strings.nix b/pkgs/lib/strings.nix
index e82fa0ebae08..838990793276 100644
--- a/pkgs/lib/strings.nix
+++ b/pkgs/lib/strings.nix
@@ -141,4 +141,6 @@ rec {
       else
         s;
 
+  basename = s: lib.last (splitString "/" s);
+
 }