{ lib, fetchFromGitHub
, pythonPackages, openslide }:

pythonPackages.buildPythonPackage rec {
  version = "1.1.1";
  name = "openslide-python-${version}";

  src = fetchFromGitHub {
    owner = "openslide";
    repo = "openslide-python";
    rev = "v${version}";
    sha256 = "1is8g8vy8s1xgfw8q76gdx8ygwvj56cl0vxfd3lx0iys15wzs7a4";
  };

  patches = [ ./zero-size-test-skip.patch ];

  postPatch = ''
    sed -i 's|LoadLibrary('\'''libopenslide.so.0'\''')|LoadLibrary('\'''${openslide}/lib/libopenslide.so.0'\''')|' openslide/lowlevel.py
  '';

  buildInputs = [
    openslide
  ];

  propagatedBuildInputs = [
    pythonPackages.pillow
  ];

  meta = with lib; {
    homepage = "http://openslide.org";
    description = "Python bindings for OpenSlide.";
    license = licenses.lgpl2;
  };
}