anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "evolution";
  -  version = "3.44.4";
  +  version = "3.45.1";
   
     src = fetchurl {
       url = "mirror://gnome/sources/evolution/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
  -    sha256 = "8LFuerrTx5RaKcMi8X2rSgjWHpm9fMkbjfNQU8XBLow=";
  +    sha256 = "/iRZq5DdZ86JdtWuu6ekP69gqvBJMeTWnxxG10ensW4=";
     };
   
     nativeBuildInputs = [
  
positive.code: , libpst
  , gspell
  , evolution-data-server
  , libgdata
  , libgweather
  , glib-networking
  , gsettings-desktop-schemas
  
negative.code:     highlight
      icu
      libcanberra-gtk3
      geocode-glib_2
      cmark
      libgweather
      libical
      libnotify
  