{ path, suffix ? null, type ? "regular" }:
let lib = import <nixpkgs/lib>; in
map
	(n: path + ("/" + n))
	(builtins.filter (n: suffix == null || (builtins.match ".*\\.${suffix}" n) != null)
	(lib.attrNames
		(lib.filterAttrs (n: v: v == type) (builtins.readDir path))))