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nil/lib/modules.nix

41 lines
1.4 KiB
Nix

{ self, lib, ... }:
let
inherit (builtins) attrValues readDir pathExists concatLists;
inherit (lib)
id mapAttrsToList filterAttrs hasPrefix hasSuffix nameValuePair
removeSuffix;
inherit (self.attrs) mapFilterAttrs;
in rec {
mapModules = dir: fn:
mapFilterAttrs (n: v: v != null && !(hasPrefix "_" n)) (n: v:
let path = "${toString dir}/${n}";
in if v == "directory" && pathExists "${path}/default.nix" then
nameValuePair n (fn path)
else if v == "regular" && n != "default.nix" && hasSuffix ".nix" n then
nameValuePair (removeSuffix ".nix" n) (fn path)
else
nameValuePair "" null) (readDir dir);
mapModules' = dir: fn: attrValues (mapModules dir fn);
mapModulesRec = dir: fn:
mapFilterAttrs (n: v: v != null && !(hasPrefix "_" n)) (n: v:
let path = "${toString dir}/${n}";
in if v == "directory" then
nameValuePair n (mapModulesRec path fn)
else if v == "regular" && n != "default.nix" && hasSuffix ".nix" n then
nameValuePair (removeSuffix ".nix" n) (fn path)
else
nameValuePair "" null) (readDir dir);
mapModulesRec' = dir: fn:
let
dirs = mapAttrsToList (k: _: "${dir}/${k}")
(filterAttrs (n: v: v == "directory" && !(hasPrefix "_" n))
(readDir dir));
files = attrValues (mapModules dir id);
paths = files ++ concatLists (map (d: mapModulesRec' d id) dirs);
in map fn paths;
}