anchor.diff:    checkInputs = with python3Packages; [
       nose
       mock
  +    xvfb_run
     ];
   
     format = "other";
     strictDeps = false; # gobject-introspection does not run with strictDeps (https://github.com/NixOS/nixpkgs/issues/56943)
   
  -  checkPhase = "python3 ../run-tests";
  +  checkPhase = "xvfb-run python3 ../run-tests";
   
     meta = with stdenv.lib; {
       description = " A personal tasks and TODO-list items organizer";
  
positive.code: , pango
  , gdk-pixbuf
  , gobject-introspection
  }:
  
  python3Packages.buildPythonApplication rec {
    pname = "gtg";
    version = "unstable-2020-09-16";
  
    src = fetchFromGitHub {
      owner = "getting-things-gnome";
      repo = "gtg";
      rev = "1be991c6d7f7b2e4b8ac16f82e8a07f9dce4272f";
      sha256 = "1f5acpjwnp08c78dds7xm22qjzcfnx2qs121yvm3rswkh27s4n23";
    };
  
  
  
negative.code:     pycairo
      pygobject3
      lxml
      gst-python
      liblarch
    ];
  