28 lines
756 B
Nix
28 lines
756 B
Nix
{ nixpkgs, ... }:
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let
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inherit (builtins)
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filter isList
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isString stringLength
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unsafeDiscardStringContext;
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inherit (nixpkgs.lib.lists) flatten subtractLists;
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inherit (nixpkgs.lib.strings) addContextFrom;
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split = strOrList:
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if isList strOrList then flatten strOrList
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else builtins.split "[[:space:]]+" strOrList
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|> filter (flag: isString flag && stringLength flag > 0);
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remerge = strOrList: list:
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if isList strOrList then list
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else toString list |> addContextFrom strOrList;
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in {
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remove = rem: strOrList: split strOrList
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|> subtractLists rem
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|> remerge strOrList;
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subst = sub: strOrList: split strOrList
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|> map (flag: sub.${unsafeDiscardStringContext flag} or flag)
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|> remerge strOrList;
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}
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