{
  description = "NixOS configuration";

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

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

    stylix = {
      url = "github:danth/stylix/master";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    elephant = {
      url = "github:abenz1267/elephant/master";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    walker = {
      url = "github:abenz1267/walker/master";
      inputs = {
        elephant.follows = "elephant";
        nixpkgs.follows = "nixpkgs";
      };
    };

    install-system = {
      url = "path:scripts/install-system";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs =
    {
      nixpkgs,
      home-manager,
      install-system,
      nix-vscode-extensions,
      stylix,
      ...
    }@inputs:
    let
      system = "x86_64-linux";
      pkgs = import nixpkgs {
        inherit system;
        config.allowUnfree = true;
        overlays = [ nix-vscode-extensions.overlays.default ];
      };
    in
    {
      nixosConfigurations = {
        laptop = let
          host = "laptop";
          profile = "desktop";
          username = "josh";
        in nixpkgs.lib.nixosSystem {
          inherit system;
          specialArgs = {
            inherit inputs;
            inherit host;
            inherit profile;
            inherit username;
          };
          pkgs = pkgs;
          modules = [
            ./hosts/${host}
          ];
        };

        vm = let
          host = "vm";
          profile = "desktop";
          username = "josh";
        in nixpkgs.lib.nixosSystem {
          inherit system;
          specialArgs = {
            inherit inputs;
            inherit host;
            inherit profile;
            inherit username;
          };
          pkgs = pkgs;
          modules = [
            ./hosts/${host}
          ];
        };

        live = let
          host = "installation-iso";
          profile = "desktop";
          username = "josh";
        in nixpkgs.lib.nixosSystem {
          inherit system;
          specialArgs = {
            inherit inputs;
            inherit host;
            inherit profile;
            inherit username;
          };
          pkgs = pkgs;
          modules = [
            (nixpkgs + "/nixos/modules/installer/cd-dvd/installation-cd-minimal.nix")
            { environment.systemPackages = [ install-system.packages.${system}.default ]; }
            ./hosts/installation-iso
          ];
        };
      };

      homeConfigurations.josh = let
        profile = "desktop";
        username = "josh";
        gpgSigningKey = null;
      in home-manager.lib.homeManagerConfiguration {
          extraSpecialArgs = {
            inherit inputs;
            inherit profile;
            inherit username;
          };
        pkgs = pkgs;
        modules = [
          {
            modules.gpg.signingKey = gpgSigningKey;
          }
          ./homes/josh/home.nix
          stylix.homeModules.stylix
        ];
      };

      devShell.${system} = nixpkgs.legacyPackages.${system}.pkgs.mkShell {
        packages = with nixpkgs.legacyPackages.${system}.pkgs; [
          nil
          nixd
        ];
      };

      formatter.${system} = nixpkgs.legacyPackages.${system}.nixfmt-tree;
    };
}