{ lib, config, inputs, username, ... }:
with lib;
let
  cfg = config.imp;
in {
  imports = [
    inputs.impermanence.nixosModules.impermanence
    (mkAliasOptionModule [ "imp" "dirs" ] [
      "environment"
      "persistence"
      "/nix/persist"
      "directories"
    ])
  ];

  options.imp.home = {
    files = mkOption {
      type = with types; listOf str;
      default = [];
    };
    dirs = mkOption {
      type = with types; listOf str;
      default = [];
    };
  };

  config = {
    environment.persistence."/nix/persist" = {
      enable = true;
      directories = [
        "/var/lib/systemd/coredump"
        "/var/lib/nixos"
      ];
      files = [
        "/etc/machine-id"
      ];
    };

    environment.persistence."/nix/persist".users."${username}" = {
    # environment.persistence."/nix/persist".users."user" = {
      directories = builtins.map (x: { directory = x; mode = "0700"; })
      [
        "Audiobooks"
        "Books"
        "Desktop"
        "Documents"
        # "Downloads"
        "Extensions"
        "Forks"
        "Games"
        "IdeaProjects"
        "Keybase"
        "Library"
        "Monero"
        "Music"
        "Phone"
        "Pictures"
        "Projects"
        "Videos"
      ] ++ cfg.home.dirs;
      files = builtins.map (x: { file = x; parentDirectory = { mode = "0700"; }; }) cfg.home.files;
    };
  };
}