From 4d9a4e0b3a02184d9c516c6a4d8c92d08c3d1e47 Mon Sep 17 00:00:00 2001
From: ChUrl <christoph.urlacher@protonmail.com>
Date: Thu, 11 Aug 2022 14:10:27 +0200
Subject: [PATCH] modules convenience functions

---
 lib/modules.nix | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/lib/modules.nix b/lib/modules.nix
index 6f505c46..15a4d5c5 100644
--- 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);
 }