{ stdenv, python3Packages, fetchFromGitHub, fetchpatch, rustPlatform, pkgconfig, openssl, Security }:

# Packaging documentation at:
# https://github.com/untitaker/vdirsyncer/blob/master/docs/packaging.rst
python3Packages.buildPythonApplication rec {
  version = "unstable-2018-08-05";
  pname = "vdirsyncer";
  name = "${pname}-${version}";

  src = fetchFromGitHub {
    owner = "spk";
    repo = pname;
    # fix-build-style branch, see https://github.com/pimutils/vdirsyncer/pull/798
    rev = "2c62d03bd73f8b44a47c2e769ade046697896ae9";
    sha256 = "1q6xvzz5rf5sqdaj3mdvhpgwy5b16isavgg7vardgjwqwv1yal28";
  };

  native = rustPlatform.buildRustPackage {
    name = "${name}-native";
    inherit src;
    sourceRoot = "source/rust";
    cargoSha256 = "1n1dxq3klsry5mmbfff2jv7ih8mr5zvpncrdgba6qs93wi77qi0y";
    buildInputs = [ pkgconfig openssl ] ++ stdenv.lib.optional stdenv.isDarwin Security;
  };

  propagatedBuildInputs = with python3Packages; [
    click click-log click-threading
    requests_toolbelt
    requests
    requests_oauthlib # required for google oauth sync
    atomicwrites
    milksnake
    shippai
  ];

  nativeBuildInputs = with python3Packages; [ setuptools_scm ];

  checkInputs = with python3Packages; [ hypothesis pytest pytest-localserver pytest-subtesthack ];

  postPatch = ''
    # see https://github.com/pimutils/vdirsyncer/pull/805
    substituteInPlace setup.cfg --replace --duration --durations

    # for setuptools_scm:
    echo 'Version: ${version}' >PKG-INFO

    sed -i 's/spec.add_external_build(cmd=cmd/spec.add_external_build(cmd="true"/g' setup.py
  '';

  preBuild = ''
    mkdir -p rust/target/release
    ln -s ${native}/lib/libvdirsyncer_rustext* rust/target/release/
  '';

  checkPhase = ''
    rm -rf vdirsyncer
    make DETERMINISTIC_TESTS=true test
  '';

  meta = with stdenv.lib; {
    homepage = https://github.com/pimutils/vdirsyncer;
    description = "Synchronize calendars and contacts";
    maintainers = with maintainers; [ matthiasbeyer gebner ];
    license = licenses.mit;
  };
}