diff --git a/pkgs/lib/lists.nix b/pkgs/lib/lists.nix index 4359662da27..6141ad413d3 100644 --- a/pkgs/lib/lists.nix +++ b/pkgs/lib/lists.nix @@ -167,4 +167,9 @@ rec { if list == [] || count == 0 then [] else [ (head list) ] ++ take (builtins.sub count 1) (tail list); + last = list: + assert list != []; + let loop = l: if tail l == [] then head l else loop (tail l); in + loop list; + }