os/profiles/cachix/default.nix

{
  pkgs,
  lib,
  ...
}: let
  folder = ./.;
  toImport = name: value: folder + ("/" + name);
  filterCaches = key: value: value == "regular" && lib.hasSuffix ".nix" key && key != "default.nix";
  imports = lib.mapAttrsToList toImport (lib.filterAttrs filterCaches (builtins.readDir folder));
in {
  inherit imports;
  nix.settings.substituters = ["https://cache.nixos.org/"];
}