anchor.diff:  stdenv.mkDerivation rec {
     name = "mpd-${version}";
     versionMajor = "0.19";
  -  versionMinor = "12";
  +  versionMinor = "13";
     version = "${versionMajor}.${versionMinor}";
   
     src = fetchurl {
       url    = "http://www.musicpd.org/download/mpd/${versionMajor}/${name}.tar.xz";
  -    sha256 = "0xg8w5vn6xd0yfw55qj6wnav7v14nmr00s3d4w5gixbjrv3ycvvv";
  +    sha256 = "0mcsj7jchip15r3d5yrwq72c5plgsl0w3x7p5vzdbcksz8w4h0gi";
     };
   
     buildInputs = [
  
positive.code: , libmms
  , libmodplug
  , libmpdclient
  , libopus
  , libsamplerate
  , libshout
  
negative.code:     libmms
      libmodplug
      libmpdclient
      libogg
      libopus
      libsamplerate
      libshout
  