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authorSilvan Mosberger <silvan.mosberger@tweag.io>2023-09-22 12:22:04 +0200
committerSilvan Mosberger <silvan.mosberger@tweag.io>2023-09-27 02:43:59 +0200
commit3b6169f87be45c77ec4b56d118a5e2c718ff3f2b (patch)
tree6960091ea305fbcae0abcf3b0827aabedc2c81ec /nixos
parent857a844ea8f1736e42f9c14c992d95be7b83a7c4 (diff)
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lib.lists.foldl': Make strict in the initial accumulator
To maintain backwards compatibility, this can't be changed in the Nix language.
We can however ensure that the version Nixpkgs has the more intuitive behavior.
Diffstat (limited to 'nixos')
-rw-r--r--nixos/doc/manual/release-notes/rl-2311.section.md3
1 files changed, 3 insertions, 0 deletions
diff --git a/nixos/doc/manual/release-notes/rl-2311.section.md b/nixos/doc/manual/release-notes/rl-2311.section.md
index cdb73fb49fa8..011fa84c96af 100644
--- a/nixos/doc/manual/release-notes/rl-2311.section.md
+++ b/nixos/doc/manual/release-notes/rl-2311.section.md
@@ -226,6 +226,9 @@
 
 - `networking.networkmanager.firewallBackend` was removed as NixOS is now using iptables-nftables-compat even when using iptables, therefore Networkmanager now uses the nftables backend unconditionally.
 
+- [`lib.lists.foldl'`](https://nixos.org/manual/nixpkgs/stable#function-library-lib.lists.foldl-prime) now always evaluates the initial accumulator argument first.
+  If you depend on the lazier behavior, consider using [`lib.lists.foldl`](https://nixos.org/manual/nixpkgs/stable#function-library-lib.lists.foldl) or [`builtins.foldl'`](https://nixos.org/manual/nix/stable/language/builtins.html#builtins-foldl') instead.
+
 - `rome` was removed because it is no longer maintained and is succeeded by `biome`.
 
 - The `services.mtr-exporter.target` has been removed in favor of `services.mtr-exporter.jobs` which allows specifying multiple targets.