nixpkgs/lib/__flake-version-info.nix

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# lib overlay to be used by the nixpkgs & nixpkgs/lib flakes
# to provide meaningful values for `lib.trivial.version` et al..
#
# Internal and subject to change, don't use this anywhere else!
self: # from the flake
finalLib: prevLib: # lib overlay
{
trivial = prevLib.trivial // {
versionSuffix =
".${finalLib.substring 0 8 (self.lastModifiedDate or self.lastModified or "19700101")}.${self.shortRev or "dirty"}";
version = finalLib.trivial.release + finalLib.trivial.versionSuffix;
revisionWithDefault = default: self.rev or default;
};
}