let pkgs = import <nixpkgs> { };

in pkgs.mkShell {
  buildInputs = with pkgs; [
    git
    nixfmt
    gnumake
    python3
    python37
    python37Packages.virtualenv
    python38
    python38Packages.virtualenv
    python39
    python39Packages.virtualenv
    python3Packages.bandit
    python3Packages.black
    python3Packages.coveralls
    python3Packages.pep8-naming
    python3Packages.poetry
    python3Packages.pytest
    python3Packages.pytest-black
    python3Packages.pytestcov
    python3Packages.pytest-flake8
    python3Packages.pytest-isort
    python3Packages.pytest-mypy
    python3Packages.pytest-pylint
    python3Packages.sphinx
    python3Packages.pytoml # needed for isort
    python3Packages.tox
  ];

  shellHook = ''
    export PYTHONPATH=${./src}:$PYTHONPATH
  '';
}