anchor.diff:  }:
   
   let
  -  major = "2.9";
  -  patch = "8";
  +  major = "2.10";
  +  patch = "0-RC1";
   
     version = "${major}.${patch}";
   in
  
positive.code:   preBuild = ''
      # Build depends on shared-mime-info
      export XDG_DATA_DIRS="$XDG_DATA_DIRS''${XDG_DATA_DIRS:+:}${shared-mime-info}/share"
    '';
  
    postInstall = ''
  
negative.code: , libxfixes
  , libxt
  , libzip
  , mypaint-brushes
  , openexr
  , pango
  , poppler
  , poppler-data
  , shared-mime-info
  , xorg
  , xorgproto
  