Deprecate lib.crossLists

NixOS · Jan 28, 2021 · 577d58a · 577d58a
1 parent 001ba39
commit 577d58a
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/lib/lists.nix b/lib/lists.nix
@@ -629,7 +629,9 @@ rec {
       crossLists (x:y: "${toString x}${toString y}") [[1 2] [3 4]]
       => [ "13" "14" "23" "24" ]
   */
-  crossLists = f: foldl (fs: args: concatMap (f: map f args) fs) [f];
+  crossLists = builtins.trace
+    "lib.crossLists is deprecated, use lib.cartesianProductOfSets instead"
+    (f: foldl (fs: args: concatMap (f: map f args) fs) [f]);
 
 
   /* Remove duplicate elements from the list. O(n^2) complexity.