depot/third_party/nixpkgs/pkgs/build-support/writers/aliases.nix

33 lines
1.1 KiB
Nix

lib: prev:
let
# Removing recurseForDerivation prevents derivations of aliased attribute
# set to appear while listing all the packages available.
removeRecurseForDerivations =
alias:
if alias.recurseForDerivations or false then
lib.removeAttrs alias [ "recurseForDerivations" ]
else
alias;
# Disabling distribution prevents top-level aliases for non-recursed package
# sets from building on Hydra.
removeDistribute = alias: if lib.isDerivation alias then lib.dontDistribute alias else alias;
# Make sure that we are not shadowing something from
# writers.
checkInPkgs =
n: alias: if builtins.hasAttr n prev then throw "Alias ${n} is still in writers" else alias;
mapAliases =
aliases:
lib.mapAttrs (
n: alias: removeDistribute (removeRecurseForDerivations (checkInPkgs n alias))
) aliases;
in
mapAliases ({
# Cleanup before 22.05, Added 2021-12-11
writePython2 = "Python 2 is EOL and the use of writers.writePython2 is deprecated.";
writePython2Bin = "Python 2 is EOL and the use of writers.writePython2Bin is deprecated.";
})