lib: improve implementation of foldAttrs

2026-08-25 17:55:21 +00:00 · 2026-07-30 23:49:08 +09:00
parent 69f6c0a1c5
commit 331c4cf699
1 changed files with 1 additions and 3 deletions
--- a/lib/attrsets.nix
+++ b/lib/attrsets.nix
@@ -832,9 +832,7 @@ rec {
  */
  foldAttrs =
    op: nul: list_of_attrs:
-    foldr (
-      n: a: foldr (name: o: o // { ${name} = op n.${name} (a.${name} or nul); }) a (attrNames n)
-    ) { } list_of_attrs;
+    mapAttrs (name: foldr op nul) (zipAttrs list_of_attrs);

  /**
    Recursively collect sets that verify a given predicate named `pred`