sneeuwvlok/_lib/modules.nix
2025-07-28 14:34:09 +02:00

52 lines
2.4 KiB
Nix

{ lib, self, ... }:
let
inherit (builtins) attrValues readDir pathExists concatLists replaceStrings listToAttrs;
inherit (lib.attrsets) mapAttrsToList filterAttrs nameValuePair;
inherit (lib.strings) hasPrefix hasSuffix removeSuffix removePrefix;
inherit (lib.trivial) id;
inherit (lib) flatten;
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 "${path}/default.nix"
then nameValuePair n (fn path)
else if v == "regular" && n != "default.nix" && hasSuffix ".nix" n && !(hasPrefix "_" n)
then nameValuePair (removeSuffix ".nix" n) (fn path)
else nameValuePair "" null
) (readDir dir);
mapModules' = dir: fn: attrValues (mapModules dir fn);
mapModulesRec = dir: fn:
mapFilterAttrs (n: v: v != null && !(hasPrefix "_" n)) (n: v: let path = "${toString dir}/${n}"; in
if v == "directory" && pathExists "${path}/default.nix"
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;
readNixosModules = dir: fn: filterAttrs (name: value: value != null && !(hasPrefix "_" name)) (listToAttrs (flatten (readDirRecursive fn dir "")));
readDirRecursive = fn: root: dir: mapAttrsToList (name: type:
if type == "directory" && pathExists "${root}/${dir}/${name}/default.nix"
then [
(nameValuePair "${replaceStrings ["/"] ["_"] (removePrefix "/" dir)}_${name}" (fn "${root}/${dir}/${name}/default.nix"))
(readDirRecursive fn root "${dir}/${name}")
]
else if type == "directory"
then readDirRecursive fn root "${dir}/${name}"
else if type == "regular" && name != "default.nix" && hasSuffix ".nix" name
then nameValuePair "${replaceStrings ["/"] ["_"] (removePrefix "/" dir)}_${removeSuffix ".nix" name}" (fn "${root}/${dir}/${name}")
else nameValuePair "" null
) (readDir "${root}/${dir}");
}