templates/system/modules/autoimport.nix

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# Auto-import Nix files in this folder, recursively.
# Sourced from https://github.com/evanjs/nixos_cfg/blob/4bb5b0b84a221b25cf50853c12b9f66f0cad3ea4/config/new-modules/default.nix
{ lib, ... }:
with lib;
let
# Recursively constructs an attrset of a given folder, recursing on directories, value of attrs is the filetype
getDir =
dir:
mapAttrs (file: type: if type == "directory" then getDir "${dir}/${file}" else type) (
builtins.readDir dir
);
# Collects all files of a directory as a list of strings of paths
files =
dir: collect isString (mapAttrsRecursive (path: type: concatStringsSep "/" path) (getDir dir));
# Search all files and folders within and below the current directory.
# Filters out files and directories that don't belong, and makes the strings absolute.
validFiles =
dir:
map (file: ./. + "/${file}") (
filter (file: file != "autoimport.nix" && hasSuffix ".nix" file) (files dir)
);
in
{
imports = validFiles ./.;
}