modules convenience functions

2022-08-11 14:10:27 +02:00
parent e8d8f545cc
commit 4d9a4e0b3a
1 changed files with 10 additions and 0 deletions
--- a/lib/modules.nix
+++ b/lib/modules.nix
@ -51,4 +51,14 @@ rec {
  # Returns base without occurences of elements that are also in remove
  without = base: remove:
  lib.filter (x: !(contains remove x)) base;
+
+  # For use with single element sets
+  attrName = set: let
+    names = lib.attrNames set;
+  in (if (names != [ ]) then (lib.head names) else null);
+
+  # For use with single element sets
+  attrValue = set: let
+    values = lib.attrValues set;
+  in (if (values != [ ]) then (lib.head values) else null);
 }