lib.customisation: fix error message when running in nix repl (#452573)

2025-10-22 02:06:47 +00:00
parent fa77ae868c 775ce27666
commit 62d9b8a326
1 changed files with 2 additions and 1 deletions
--- a/lib/customisation.nix
+++ b/lib/customisation.nix
@@ -305,9 +305,10 @@ rec {
        arg:
        let
          loc = unsafeGetAttrPos arg fargs;
+          loc' = if loc != null then loc.file + ":" + toString loc.line else "<unknown location>";
        in
        "Function called without required argument \"${arg}\" at "
-        + "${loc.file}:${toString loc.line}${prettySuggestions (getSuggestions arg)}";
+        + "${loc'}${prettySuggestions (getSuggestions arg)}";

      # Only show the error for the first missing argument
      error = errorForArg (head (attrNames missingArgs));