anchor.diff: -{ stdenv
  -, lib
  -, python3
  +{ lib
  +, stdenv
  +, fetchFromGitHub
   , glibcLocales
   , installShellFiles
   , jq
  +, python3
   }:
  -let
  -  inherit (python3.pkgs) buildPythonApplication fetchPypi setuptools-scm;
  -in
  -buildPythonApplication rec {
  +
  +python3.pkgs.buildPythonApplication rec {
     pname = "todoman";
     version = "4.1.0";
  +  format = "setuptools";
   
  -  src = fetchPypi {
  -    inherit pname version;
  -    sha256 = "ce3caa481d923e91da9b492b46509810a754e2d3ef857f5d20bc5a8e362b50c8";
  +  src = fetchFromGitHub {
  +    owner = "pimutils";
  +    repo = pname;
  +    rev = "refs/tags/v${version}";
  +    hash = "sha256-MItFZ+4Q7UKeIWHl8KFiWOLNgFcfb0h1YWjPd+g48Wg=";
     };
   
     SETUPTOOLS_SCM_PRETEND_VERSION = version;
   
     nativeBuildInputs = [
       installShellFiles
  +  ] ++ (with python3.pkgs; [
       setuptools-scm
  -  ];
  +  ]);
   
     propagatedBuildInputs = with python3.pkgs; [
       atomicwrites
  
positive.code:     homepage = "https://github.com/pimutils/todoman";
      description = "Standards-based task manager based on iCalendar";
      longDescription = ''
        Todoman is a simple, standards-based, cli todo (aka: task) manager. Todos
        are stored into icalendar files, which means you can sync them via CalDAV
        using, for example, vdirsyncer.
  
        Todos are read from individual ics files from the configured directory.
        This matches the vdir specification.  There’s support for the most common TODO
        features for now (summary, description, location, due date and priority) for
        now.  Runs on any Unix-like OS. It’s been tested on GNU/Linux, BSD and macOS.
        Unsupported fields may not be shown but are never deleted or altered.
  
        Todoman is part of the pimutils project
      '';
      changelog = "https://github.com/pimutils/todoman/raw/v${version}/CHANGELOG.rst";
      license = licenses.isc;
  
negative.code:     "test_missing_cache_dir"
      "test_sorting_null_values"
      "test_xdg_existant"
      # Tests are sensitive to performance
      "test_sorting_fields"
    ] ++ lib.optionals stdenv.isDarwin [
      "test_sorting_fields"
    ];
  