1 files changed, 35 insertions, 6 deletions
diff --git a/lib/options.nix b/lib/options.nix
index 5b7482c8093..87cd8b79796 100644
--- a/lib/options.nix
+++ b/lib/options.nix
@@ -1,11 +1,40 @@
 # Nixpkgs/NixOS option handling.
 { lib }:
 
-with lib.trivial;
-with lib.lists;
-with lib.attrsets;
-with lib.strings;
-
+let
+  inherit (lib)
+    all
+    collect
+    concatLists
+    concatMap
+    elemAt
+    filter
+    foldl'
+    head
+    isAttrs
+    isBool
+    isDerivation
+    isFunction
+    isInt
+    isList
+    isString
+    length
+    mapAttrs
+    optional
+    optionals
+    take
+    ;
+  inherit (lib.attrsets)
+    optionalAttrs
+    ;
+  inherit (lib.strings)
+    concatMapStrings
+    concatStringsSep
+    ;
+  inherit (lib.types)
+    mkOptionType
+    ;
+in
 rec {
 
   /* Returns true when the given argument is an option
@@ -110,7 +139,7 @@ rec {
     # Return early if we only have one element
     # This also makes it work for functions, because the foldl' below would try
     # to compare the first element with itself, which is false for functions
-    else if length defs == 1 then (elemAt defs 0).value
+    else if length defs == 1 then (head defs).value
     else (foldl' (first: def:
       if def.value != first.value then
         throw "The option `${showOption loc}' has conflicting definition values:${showDefs [ first def ]}"