cafkafk/lix
cafkafk/lix
1
0
Fork 0
Code Issues Pull requests 1 Projects Releases Packages Wiki Activity Actions
lix/doc/manual/rl-next/nixversion-fake.md
Jade Lovelace 6d84d6bdc1 builtins: fix builtins.langVersion docs to state it's deprecated 
This builtin was always a problem and nixpkgs uses it in exactly one
place, to give up if the Nix version is absurdly old. It has no other
use cases, and doesn't work in a multi-implementation world anyway.

Change-Id: I03c36e118591029e2ef14b091fe14a311c66a08a
2024-05-15 21:54:12 -07:00

584 B
Raw Blame History

synopsis cls credits category
`builtins.nixVersion` and `builtins.langVersion` return fixed values
558
1144
jade Breaking Changes

builtins.nixVersion now returns a fixed value "2.18.3-lix".

builtins.langVersion returns a fixed value 6, matching CppNix 2.18.

This prevents feature detection assuming that features that exist in Nix post-Lix-branch-off might exist, even though the Lix version is greater than the Nix version.

In the future, check for builtins for feature detection. If a feature cannot be detected by those means, please file a Lix bug.