top-level: Fix dontRecurseIntoAttrs and include in lib

dontRecurseIntoAttrs was a noop (x: x), causing the expression
dontRecurseIntoAttrs (recurseIntoAttrs a) to have the wrong effect.

1 files changed, 5 insertions, 0 deletions

diff --git a/lib/attrsets.nix b/lib/attrsets.nix
index 4b73735fd85..607a22393f8 100644
--- a/lib/attrsets.nix
+++ b/lib/attrsets.nix
@@ -479,6 +479,11 @@ rec {
   recurseIntoAttrs =
     attrs: attrs // { recurseForDerivations = true; };
 
+  /* Undo the effect of recurseIntoAttrs.
+   */
+  dontRecurseIntoAttrs =
+    attrs: attrs // { recurseForDerivations = false; };
+
   /*** deprecated stuff ***/
 
   zipWithNames = zipAttrsWithNames;