{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    pyproject-nix = {
      url = "github:nix-community/pyproject.nix";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };
  outputs = {
    self,
    nixpkgs,
    ...
  } @ inputs: let
    system = "x86_64-linux";
    pkgs = import nixpkgs {
      inherit system;
      config.allowUnfree = true;
    };
    python = pkgs.python3;
    serverProject = inputs.pyproject-nix.lib.project.loadPyproject {
      projectRoot = ./.;
    };
  in {
    # devShells.${system}.default = pkgs.mkShell {
    #   packages = with pkgs; [
    #     python313
    #     python313Packages.flask
    #     python313Packages.waitress
    #   ];
    #
    #   shellHook = ''
    #     python --version
    #     exec zsh
    #   '';
    # };
    packages.${system} = let
      scanbuddy = pkgs.writeShellApplication {
        name = "scanbuddy";

        runtimeInputs = with pkgs; [sane-backends brscan5 ghostscript];

        text = builtins.readFile ./scanbuddy.bash;
      };

      # Returns an attribute set that can be passed to `buildPythonPackage`.
      attrs = serverProject.renderers.buildPythonPackage {inherit python;};
      server = python.pkgs.buildPythonPackage (attrs
        // {
          env.CUSTOM_ENVVAR = "foobar";
        });
    in {
      default = pkgs.symlinkJoin {
        name = "scanbuddy";
        paths = [scanbuddy server];
      };
      inherit scanbuddy;
      inherit server;
    };
  };
}