{
  description = "nipsy's NixOS configuration";

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

    hardware.url = "github:nixos/nixos-hardware";

    home-manager-stable = {
      url = "github:nix-community/home-manager/release-23.11";
      inputs.nixpkgs.follows = "nixpkgs-stable";
    };

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

    nixpkgs-stable.url = "github:nixos/nixpkgs/release-23.11";
    nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable";
  };

  outputs = inputs@{ home-manager-stable, home-manager-unstable, nixpkgs-stable, nixpkgs-unstable, ... }: rec {
    nixosConfigurations = {
      ginaz = nixpkgs-unstable.lib.nixosSystem {
        pkgs = pkgs-unstable;
        system = "x86_64-linux";
        modules = [
          ./hosts/ginaz
          home-manager-unstable.nixosModules.home-manager {
            home-manager.users.nipsy = import ./home/nipsy/ginaz.nix;
          }
        ];
      };

      richese = nixpkgs-unstable.lib.nixosSystem {
        pkgs = pkgs-unstable;
        system = "x86_64-linux";
        modules = [
          ./hosts/richese
          home-manager-unstable.nixosModules.home-manager {
            home-manager.users.nipsy = import ./home/nipsy/richese.nix;
          }
        ];
      };
    };

    pkgs-stable = import nixpkgs-stable {
      system = "x86_64-linux";
      config.allowUnfree = true;
      overlays = [(import ./pkgs)];
    };

    pkgs-unstable = import nixpkgs-unstable {
      system = "x86_64-linux";
      config.allowUnfree = true;
      overlays = [(import ./pkgs)];
    };
  };
}