{ config, inputs, lib, pkgs, ... }:

let
  inherit (builtins) toString;
  inherit (lib.modules) mkDefault mkIf;
  inherit (lib.my) mapModulesRec';
in {
  imports =
    [
      inputs.home-manager.nixosModules.home-manager
      inputs.amdl.nixosModules.default
      inputs.vscode-server.nixosModules.default
    ]
    ++ (mapModulesRec' (toString ./modules) import);

  environment.variables = {
    NIXPKGS_ALLOW_UNFREE = "1";
  };

  nix = {
    package = pkgs.nix;

    # flake registry and nix path pinning
    # might not be needed? see: https://github.com/NixOS/nixpkgs/commit/e456032addae76701eb17e6c03fc515fd78ad74f
    nixPath = [ "nixpkgs=${inputs.nixpkgs}" ];
    registry.nixpkgs.flake = inputs.nixpkgs;

    settings = {
      experimental-features = [ "nix-command" "flakes" ];
      auto-optimise-store = true;
      keep-outputs = true;
      keep-derivations = true;
      substituters = [
        "https://nix-community.cachix.org"
      ];
      trusted-public-keys = [
        "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
      ];
    };

    optimise.automatic = true;
    gc = {
      automatic = true;
      dates = "weekly";
      options = "--delete-older-than 30d";
    };
  };

  system.stateVersion = mkDefault "23.11";
  system.configurationRevision = with inputs; mkIf (self ? rev) self.rev;

  boot = {
    kernelPackages = mkDefault pkgs.linuxPackages_latest;
    kernelParams = [ "pci_aspm.policy=performance" ];
  };

  time.timeZone = mkDefault "America/Los_Angeles";

  i18n.defaultLocale = mkDefault "en_US.UTF-8";

  hardware.enableRedistributableFirmware = true;

  environment.systemPackages = with pkgs; [
    unrar unzip
    micro
    curl wget
    git
  ];
}