{
  description = "copland nixos configurations";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";

    chaotic.url = "github:chaotic-cx/nyx/nyxpkgs-unstable";

    nix-cachyos-kernel.url = "github:xddxdd/nix-cachyos-kernel/release";

    zen-browser.url = "github:0xc000022070/zen-browser-flake";

    copetch.url = "github:elwrcl/copetch";

    home-manager = {
      url = "github:nix-community/home-manager";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    helium = {
      url = "github:AlvaroParker/helium-nix";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    apple-fonts = {
      url = "github:Lyndeno/apple-fonts.nix";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    noctalia = {
      url = "github:noctalia-dev/noctalia-shell";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs = inputs@{ self, nixpkgs, chaotic, home-manager, nix-cachyos-kernel, ... }:
    let
      system = "x86_64-linux";

      chaoticOverlay = chaotic.overlays.default;
      cachyosKernelOverlay = nix-cachyos-kernel.overlays.pinned;
      copetchOverlay = inputs.copetch.overlays.default;

    in
    {
      nixosConfigurations = {
        copland = nixpkgs.lib.nixosSystem {
          specialArgs = {
            inherit inputs system;
            zen-browser = inputs.zen-browser;
            nix-cachyos-kernel = nix-cachyos-kernel;
          };

          modules = [
            { nixpkgs.hostPlatform = system; }
            chaotic.nixosModules.default
            home-manager.nixosModules.home-manager

            {
              nixpkgs.overlays = [ chaoticOverlay cachyosKernelOverlay copetchOverlay ];
              nixpkgs.config.allowUnfree = true;
            }

            {
              home-manager = {
                useGlobalPkgs = true;
                useUserPackages = true;
                extraSpecialArgs = { inherit inputs system; };
                users.elars = import ./home;
              };
            }

            ./machine.nix
            ./nixos/default.nix
          ];
        };
      };
    };
}