diff options
Diffstat (limited to 'pkgs/lib/types.nix')
| -rw-r--r-- | pkgs/lib/types.nix | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/lib/types.nix b/pkgs/lib/types.nix index 956368138aa2..38ae7b43630a 100644 --- a/pkgs/lib/types.nix +++ b/pkgs/lib/types.nix @@ -157,7 +157,7 @@ rec { uniq = elemType: mkOptionType { inherit (elemType) name check iter fold docPath hasOptions; merge = list: - if tail list == [] then + if length list == 1 then head list else throw "Multiple definitions. Only one is allowed for this option."; |