Improve the error message for uniq option type.

11 years ago · 983c87a1dd
parent fd803fce60
commit 983c87a1dd
1 changed files with 1 additions and 1 deletions
--- a/pkgs/lib/types.nix
+++ b/pkgs/lib/types.nix
@ -166,7 +166,7 @@ rec {
        if length list == 1 then
          head list
        else
-          throw "Multiple definitions. Only one is allowed for this option.";
+          throw "Multiple definitions of ${elemType.name}. Only one is allowed for this option.";
    };

    none = elemType: mkOptionType {