{
  description = "NixOS configuration";

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

    spicetify-nix.url = "github:Gerg-L/spicetify-nix";

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

    nix-colors.url = "github:misterio77/nix-colors";

    zen-browser = {
      url = "github:0xc000022070/zen-browser-flake";
      inputs.nixpkgs.follows = "nixpkgs";
    };

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

  outputs = { self, nixpkgs, home-manager, nix-colors, disko, ... } @ inputs:
    let
      system = "x86_64-linux";
      pkgs = import nixpkgs {
        inherit system;
        config.allowUnfree = true;
      };
    in
    {
      nixosConfigurations = {

        # ------------------------
        # Virgil machine
        # ------------------------
        virgil = nixpkgs.lib.nixosSystem {
          inherit system;

          modules = [
            ./hosts/virgil/configuration.nix
            home-manager.nixosModules.home-manager
            inputs.disko.nixosModules.disko
            {
              home-manager.users.tulg.imports = [ ./modules/home.nix ];
              home-manager.extraSpecialArgs = {
                spicetify-nix = inputs.spicetify-nix;
                zen-browser = inputs.zen-browser;
              };
            }
          ];
        };

        # ------------------------
        # archangel
        # ------------------------
        archangel = nixpkgs.lib.nixosSystem {
          inherit system;

          modules = [
            ./hosts/archangel/configuration.nix
            home-manager.nixosModules.home-manager
            {
              home-manager.users.tulg.imports = [ ./modules/home.nix ];
              home-manager.extraSpecialArgs = {
                spicetify-nix = inputs.spicetify-nix;
                zen-browser = inputs.zen-browser;
              };
            }
          ];
        };

        # ------------------------
        # Placeholder machine 2
        # ------------------------
        machine2 = nixpkgs.lib.nixosSystem {
          inherit system;

          modules = [
            ./hosts/machine2/configuration.nix
            home-manager.nixosModules.home-manager
            {
              home-manager.users.tulg.imports = [ ./modules/home.nix ];
              home-manager.extraSpecialArgs = {
                spicetify-nix = inputs.spicetify-nix;
                zen-browser = inputs.zen-browser;
              };
            }
          ];
        };

      };
    };
}