anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "gnome-todo";
  -  version = "3.28.1";
  +  version = "40.0";
   
     src = fetchurl {
  -    url = "mirror://gnome/sources/${pname}/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
  -    sha256 = "08ygqbib72jlf9y0a16k54zz51sncpq2wa18wp81v46q8301ymy7";
  +    url = "mirror://gnome/sources/${pname}/${lib.versions.major version}/${pname}-${version}.tar.xz";
  +    sha256 = "aAl8lvBnXHFCZn0QQ0ToNHLdf8xTj+wKzb9gJrucobE=";
     };
  -
  -  patches = [
  -    # fix build with libecal 2.0
  -    (fetchpatch {
  -      name = "gnome-todo-eds-libecal-2.0.patch";
  -      url = "https://src.fedoraproject.org/rpms/gnome-todo/raw/bed44b8530f3c79589982e03b430b3a125e9bceb/f/gnome-todo-eds-libecal-2.0.patch";
  -      sha256 = "1ghrz973skal36j90wm2z13m3panw983r6y0k7z9gpj5lxgz92mq";
  -    })
  -  ];
  -  postPatch = ''
  -    chmod +x meson_post_install.py
  -    patchShebangs meson_post_install.py
  -  '';
   
     nativeBuildInputs = [
       meson
  
positive.code: 
    buildInputs = [
      glib
      gtk3
      libpeas
      gnome-online-accounts
      gsettings-desktop-schemas
      gnome.adwaita-icon-theme
      # Plug-ins
      evolution-data-server
      libxml2
      libsoup
      libical
      librest
      json-glib
    ];
  
    # Fix parallel building: missing dependency from src/gtd-application.c
    # Probably remove for 3.30+ https://gitlab.gnome.org/GNOME/gnome-todo/issues/170
    preBuild = "ninja src/gtd-vcs-identifier.h";
  
    passthru = {
      updateScript = gnome.updateScript {
  
negative.code: { lib
  , stdenv
  , fetchurl
  , fetchpatch
  , meson
  