anchor.diff:      owner = "elementary";
       repo = repoName;
       rev = version;
  -    sha256 = "18npf4zzf2dywr1zkr6fqzcbb70297yvdp5wxw7zyam1xwa86v07";
  +    sha256 = "1caxc42jrys5s4x9qai5wdpcwpkmyvnqx9z75974g7swiz1lrzq6";
     };
   
     passthru = {
  
positive.code:     gtk3
      libchamplain
      libgee
      libical
      libnotify
      libgdata # required by some dependency transitively
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "elementary-calendar";
    version = "6.0.1";
  
    repoName = "calendar";
  
  