{
  lib,
  inputs,
  pkgs-unstable,
  ...
}:
let
  inherit (builtins) attrNames filter readDir;
  dirs =
    let
      files = readDir ./.;
    in
    filter (name: files."${name}" == "directory") (attrNames files);
  util = import ./util.nix;
in
lib.composeManyExtensions (
  map (
    dir:
    import ./${dir} {
      util = util dir;
      inherit inputs lib pkgs-unstable;
    }
  ) dirs
)