anchor.diff:  { stdenv, fetchurl }:
   
   stdenv.mkDerivation rec {
  -  version = "5.7";
  +  version = "5.8";
     name = "checkstyle-${version}";
   
     src = fetchurl {
       url = "mirror://sourceforge/checkstyle/${version}/${name}-bin.tar.gz";
  -    sha256 = "0kzj507ylynq6p7v097bjzsckkjny5i2fxwxyrlwi5samhi2m06x";
  +    sha256 = "0ydv99rwzib29j2vq51qvgqjk0mn8zrjg8akflr5i62m866r4lsx";
     };
   
     installPhase = ''
  
positive.code:     cp -R * $out/checkstyle
    '';
  
    meta = {
      description = "Checks Java source against a coding standard";
      longDescription = ''
        checkstyle is a development tool to help programmers write Java code that
  
negative.code:       Conventions, but is highly configurable.
      '';
      homepage = http://checkstyle.sourceforge.net/;
      license = licenses.lgpl21;
      maintainers = with maintainers; [ pSub ];
    };
  }
  