33 lines
1,003 B
Nix
33 lines
1,003 B
Nix
|
{ nixpkgs, ... }:
|
||
|
|
|
||
|
|
let
|
||
|
|
inherit (builtins)
|
||
|
|
isFunction
|
||
|
|
filter isList
|
||
|
|
match isString stringLength
|
||
|
|
unsafeDiscardStringContext;
|
||
|
|
|
||
|
|
inherit (nixpkgs.lib.attrsets) foldlAttrs;
|
||
|
|
inherit (nixpkgs.lib.lists) flatten subtractLists;
|
||
|
|
inherit (nixpkgs.lib.strings) addContextFrom;
|
||
|
|
|
||
|
|
split = strOrList:
|
||
|
|
if isList strOrList then flatten strOrList
|
||
|
|
else builtins.split "[[:space:]]+" strOrList
|
||
|
|
|> filter (flag: isString flag && stringLength flag > 0);
|
||
|
|
|
||
|
|
merge = strOrList: list:
|
||
|
|
if isList strOrList then list
|
||
|
|
else toString list |> addContextFrom strOrList;
|
||
|
|
in substAttrs: strOrList: split strOrList
|
||
|
|
|> map (flag: let subst = foldlAttrs (result: regex: subst:
|
||
|
|
if result != false then result
|
||
|
|
else let groups = match regex flag;
|
||
|
|
in if groups == null then false
|
||
|
|
else if isFunction subst then subst groups
|
||
|
|
else subst)
|
||
|
|
false substAttrs;
|
||
|
|
in if subst != false then subst else flag)
|
||
|
|
|> filter (flag: flag != null)
|
||
|
|
|> merge strOrList
|