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release-haskell: add docs for removeMany and removePlatforms

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(cdep)illabout 2021-07-18 18:15:49 +09:00
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29
pkgs/top-level/release-haskell.nix
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@ -81,8 +81,37 @@ let
recursiveUpdateMany = builtins.foldl' lib.recursiveUpdate {};
# Remove multiple elements from a list at once.
#
# removeMany
# :: [a] -- list of elements to remove
# -> [a] -- list of elements from which to remove
# -> [a]
#
# > removeMany ["aarch64-linux" "x86_64-darwin"] ["aarch64-linux" "x86_64-darwin" "x86_64-linux"]
# ["x86_64-linux"]
removeMany = itemsToRemove: list: lib.foldr lib.remove list itemsToRemove;
# Recursively remove platforms from the values in an attribute set.
#
# removePlatforms
# :: [String]
# -> AttrSet
# -> AttrSet
#
# > attrSet = {
# foo = ["aarch64-linux" "x86_64-darwin" "x86_64-linux"];
# bar.baz = ["aarch64-linux" "x86_64-linux"];
# bar.quux = ["aarch64-linux" "x86_64-darwin"];
# }
# > removePlatforms ["aarch64-linux" "x86_64-darwin"] attrSet
# {
# foo = ["x86_64-linux"];
# bar = {
# baz = ["x86_64-linux"];
# quux = [];
# };
# }
removePlatforms = platformsToRemove: packageSet:
lib.mapAttrsRecursive
(_: val: