{ pkgs, config, lib, inputs, ... }:
let
  filterGit =
    builtins.filterSource (type: name: name != ".git" || type != "directory");
  system = "x86_64-linux";
  old = import inputs.nixpkgs-old ({
    config = config.nixpkgs.config;
    localSystem = { inherit system; };
  });
in {
  nixpkgs.overlays = [
    inputs.nix.overlay
    (self: super: rec {
      nix = super.nix // {
        meta = super.nix.meta // { platforms = lib.platforms.unix; };
      };

      nur = (import inputs.NUR {
        pkgs = old;
        nurpkgs = pkgs;
      }).repos;

      inherit (nur.balsoft.pkgs) termNote nix-patch;

      # inherit (old) mautrix-telegram;

      lambda-launcher = let
        pkgs' =
          inputs.lambda-launcher.inputs.nixpkgs.legacyPackages.x86_64-linux.extend (_: _: {
            inherit (pkgs) glibc stdenv glibc-locales;
          });
      in pkgs'.callPackage "${inputs.lambda-launcher}/wrapper.nix" {
        lambda-launcher-unwrapped =
          pkgs'.haskellPackages.callPackage "${inputs.lambda-launcher}/lambda-launcher.nix" { };
      };

      simple-osd = inputs.simple-osd-daemons.packages.x86_64-linux;

      inherit old;

      yt-utilities = inputs.yt-utilities.defaultPackage.x86_64-linux;

      # mopidy-youtube = super.mopidy-youtube.overrideAttrs (_: { src = inputs.mopidy-youtube; });

      nerdfonts = nur.balsoft.pkgs.roboto-mono-nerd;

      # inherit (inputs.nixpkgs-mesa.legacyPackages.x86_64-linux) sway mesa_drivers;
    })
  ];
  nixpkgs.config = {
    allowUnfree = true;
    android_sdk.accept_license = true;
    firefox.enablePlasmaBrowserIntegration = true;
  };
  environment.etc.nixpkgs.source = inputs.nixpkgs;
  nix = rec {
    nixPath = lib.mkForce [ "nixpkgs=/etc/nixpkgs" ];
    binaryCaches = [ "https://cache.nixos.org" ];

    registry.self.flake = inputs.self;

    trustedUsers = [ "root" "balsoft" "@wheel" ];

    nrBuildUsers = 16;

    optimise.automatic = true;

    binaryCachePublicKeys =
      [ "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=" ];

    package = inputs.nix.packages.x86_64-linux.nix;

    extraOptions = ''
      experimental-features = nix-command flakes
    '';
    requireSignedBinaryCaches = false;
  };
}