anchor.diff:      (substituteAll {
         src = ./0001-umount_davfs-substitute-ps-command.patch;
         ps = "${procps}/bin/ps";
  +    })
  +
  +    # Fix build with neon 0.31
  +    # http://savannah.nongnu.org/bugs/?58101
  +    (fetchpatch {
  +      name = "neon-0.31.patch";
  +      url = "http://savannah.nongnu.org/bugs/download.php?file_id=48737";
  +      sha256 = "EtQfcstWkn8AcbZo93midGt076gq20AvGGJyQ3FO/YQ=";
  +      extraPrefix = ""; # empty means add 'a/' and 'b/'
       })
     ];
   
  
positive.code:     sha256 = "00fqadhmhi2bmdar5a48nicmjcagnmaj9wgsvjr6cffmrz6pcx21";
    };
  
    buildInputs = [ neon zlib ];
  
    patches = [
  
negative.code: { stdenv
  , fetchurl
  , fetchpatch
  , autoreconfHook
  , neon
  , procps
  , substituteAll
  