```
 {stdenv, python37Packages, fetchFromGitHub, python3, gexiv2, ffmpeg}:

let
  pythonEnv = python3.withPackages (pythonPackages: with pythonPackages; [
    pyqt5
    pyqtwebengine
    pygobject3
    appdirs
    requests
    six
    pillow
  ]);
in

  python37Packages.buildPythonPackage rec {
    pname = "photini";
    version = "2019.10.1";

    src = fetchFromGitHub {
      owner = "jim-easterbrook";
      repo = "Photini";
      rev = "${version}";
      sha256 = "19xm24vgfqis0bqrg5fc5jxf5yr1md5y49kb7q3792gihykl6yzm";
    };

    buildInputs = [ pythonEnv gexiv2 ffmpeg ];

  }
```