anchor.diff:      };
     };
   
  -  meta = with stdenv.lib; {
  +  meta = with lib; {
       description = "A flexible, powerful daemon for playing music";
       homepage = http://www.musicpd.org/;
       license = licenses.gpl2;
  
positive.code: }:
  
  let
    inherit (stdenv.lib)
      boolEn
      boolString
      boolWt
  
negative.code: { stdenv
  , fetchurl
  , lib
  
  # Required
  , boost
  