{
  description = "NixOS Configuration for Raspberry Pi 4";

  nixConfig = {
    extra-substituters = [ "https://nix-community.cachix.org" ];
    extra-trusted-public-keys = [
      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
    ];

    http-connections = 4;
    download-buffer-size = 268435456; # 256MB
  };

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
    home-manager.url = "github:nix-community/home-manager/master";
    home-manager.inputs.nixpkgs.follows = "nixpkgs";
    nixvim.url = "github:nix-community/nixvim";
    nixcord.url = "github:kaylorben/nixcord";
    spicetify-nix.url = "github:Gerg-L/spicetify-nix";
  };

  outputs =
    {
      self,
      nixpkgs,
      home-manager,
      nixvim,
      ...
    }@inputs:
    let
      primaryUser = "phil";
      system = "aarch64-linux";
    in
    {
      nixosConfigurations."cyper-pi-1" = nixpkgs.lib.nixosSystem {
        inherit system;
        modules = [
          ./nixos/default.nix
          ./nixos/hardware.nix
          home-manager.nixosModules.home-manager
          {
            home-manager = {
              useGlobalPkgs = true;
              useUserPackages = true;
              users.${primaryUser} = import ./home/default.nix;
              extraSpecialArgs = { inherit inputs primaryUser; };
              backupFileExtension = "backup";
            };
          }
        ];
        specialArgs = { inherit inputs self primaryUser; };
      };
    };
}