diff options
Diffstat (limited to 'lib/trivial.nix')
| -rw-r--r-- | lib/trivial.nix | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/lib/trivial.nix b/lib/trivial.nix index c68bac902e91..afae4f87254f 100644 --- a/lib/trivial.nix +++ b/lib/trivial.nix @@ -166,6 +166,30 @@ rec { /* Returns the current nixpkgs release number as string. */ release = lib.strings.fileContents ../.version; + /* The latest release that is supported, at the time of release branch-off, + if applicable. + + Ideally, out-of-tree modules should be able to evaluate cleanly with all + supported Nixpkgs versions (master, release and old release until EOL). + So if possible, deprecation warnings should take effect only when all + out-of-tree expressions/libs/modules can upgrade to the new way without + losing support for supported Nixpkgs versions. + + This release number allows deprecation warnings to be implemented such that + they take effect as soon as the oldest release reaches end of life. */ + oldestSupportedRelease = + # Update on master only. Do not backport. + 2111; + + /* Whether a feature is supported in all supported releases (at the time of + release branch-off, if applicable). See `oldestSupportedRelease`. */ + isInOldestRelease = + /* Release number of feature introduction as an integer, e.g. 2111 for 21.11. + Set it to the upcoming release, matching the nixpkgs/.version file. + */ + release: + release <= lib.trivial.oldestSupportedRelease; + /* Returns the current nixpkgs release code name. On each release the first letter is bumped and a new animal is chosen |