{
  description = "A comic strip downloader and archiver (unstable)";

  inputs = {
    nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/0.1.0.tar.gz";
    flake-utils.url = "https://flakehub.com/f/numtide/flake-utils/0.1.85.tar.gz";
  };

  outputs = {
    self,
    nixpkgs,
    flake-utils,
    ...
  }: let
    pythonVersion = "python39";
  in
    flake-utils.lib.eachDefaultSystem (system: let
      pkgs = nixpkgs.legacyPackages.${system};
      lib = pkgs.lib;
      python3Packages = pkgs.python3Packages;
      fetchPypi = pkgs.fetchPypi;

      pkgSrc = pkgs.fetchFromGitHub {
        owner = "webcomics";
        repo = "dosage";
        rev = "9163317abadcef0a562afaaf422828b56d006e20";
        hash = "sha256-t5HxvXCFPNG5K1uDtfIxDo6JV921ywY1Eznj7GoSh44=";
      };
    in rec {
      defaultPackage = python3Packages.buildPythonApplication rec {
        pname = "dosage";
        version = "3.1.dev104+g9e05fae304";
        format = "pyproject";

        nativeCheckInputs = with python3Packages; [
          pytestCheckHook
          pytest-xdist
          responses
        ];

        src = pkgSrc;
        requirements = "${src}/setup/requirements.txt";

        nativeBuildInputs = with python3Packages; [setuptools-scm];

        propagatedBuildInputs = with python3Packages; [
          colorama
          imagesize
          lxml
          platformdirs
          requests
        ];

        meta = {
          description = "A comic strip downloader and archiver";
          homepage = "https://dosage.rocks/";
          license = lib.licenses.mit;
          maintainers = with lib.maintainers; [dmoonfire];
        };
      };

      formatter = pkgs.alejandra;
    });
}