{
  description = "NixOS configuration of DerGrumpf";

  # the nixConfig here only affects the flake itself, not the system configuration!
  nixConfig = {
    extra-substituters = [
      "https://nix-community.cachix.org"
    ];
    extra-trusted-public-keys = [
      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
    ];
  };

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-24.11";
    hyprland.url = "github:hyprwm/Hyprland";
    spicetify-nix.url = "github:Gerg-L/spicetify-nix";
    nixcord.url = "github:kaylorben/nixcord";

    /*
      nixvim = {
          url = "github:nix-community/nixvim/nixos-24.11";
          inputs.nixpkgs.follows = "nixpkgs";
      };
    */

    catppuccin.url = "github:catppuccin/nix";

    home-manager.url = "github:nix-community/home-manager/release-24.11";
    home-manager.inputs.nixpkgs.follows = "nixpkgs";

    hyprland-plugins = {
      url = "github:hyprwm/hyprland-plugins";
      inputs.hyprland.follows = "hyprland";
    };
  };

  outputs =
    inputs@{
      self,
      nixpkgs,
      home-manager,
      catppuccin,
      ...
    }:
    {
      packages.x86_64-linux.default = self.nixosConfigurations.iso.config.system.build.isoImage;
      nixosConfigurations = {
        iso = nixpkgs.lib.nixosSystem {
          system = "x86_64-linux";
          modules = [
            (
              { pkgs, modulesPath, ... }:
              {
                imports = [ (modulesPath + "/installer/cd-dvd/installation-cd-minimal.nix") ];
                environment.systemPackages = with pkgs; [
                  neovim
                  git
                  wget
                  curl
                ];
                nix.settings.experimental-features = [
                  "nix-command"
                  "flakes"
                ];
              }
            )
          ];
        };

        m920q =
          let
            username = "phil";
            specialArgs = {
              inherit username;
              inherit inputs;
            };
          in
          nixpkgs.lib.nixosSystem {
            inherit specialArgs;
            system = "x86_64-linux";

            modules = [
              ./hosts/m920q
              ./users/${username}/nixos.nix

              home-manager.nixosModules.home-manager
              {
                home-manager.useGlobalPkgs = true;
                home-manager.useUserPackages = true;

                home-manager.backupFileExtension = "backup";
                home-manager.extraSpecialArgs = inputs // specialArgs;
                home-manager.users.${username} = import ./users/${username}/home.nix;
                home-manager.sharedModules = [
                  inputs.nixcord.homeModules.nixcord
                ];

                nix.settings.experimental-features = [
                  "nix-command"
                  "flakes"
                ];
              }
            ];
          };

        qemu =
          let
            username = "phil";
            specialArgs = { inherit username; };
          in
          nixpkgs.lib.nixosSystem {
            inherit specialArgs;
            system = "x86_64-linux";

            modules = [
              ./hosts/qemu
              ./users/${username}/nixos.nix

              home-manager.nixosModules.home-manager
              {
                home-manager.useGlobalPkgs = true;
                home-manager.useUserPackages = true;

                home-manager.extraSpecialArgs = inputs // specialArgs;
                home-manager.users.${username} = import ./users/${username}/home.nix;
              }
            ];
          };

        hp15-n028sg =
          let
            username = "phil";
            specialArgs = { inherit username; };
          in
          nixpkgs.lib.nixosSystem {
            inherit specialArgs;
            system = "x86_64-linux";

            modules = [
              ./hosts/hp15-n028sg
              ./users/${username}/nixos.nix

              home-manager.nixosModules.home-manager
              {
                home-manager.useGlobalPkgs = true;
                home-manager.useUserPackages = true;

                home-manager.extraSpecialArgs = inputs // specialArgs;
                home-manager.users.${username} = import ./users/${username}/home.nix;
              }
            ];
          };
      };
    };
}