anchor.diff:    installPhase = "make install prefix=$out";
   
     meta = {
  +    description = ''A tool to generate CVS patch set information'';
       longDescription = ''
         CVSps is a program for generating `patchset' information from a
         CVS repository.  A patchset in this case is defined as a set of
  
positive.code: { fetchurl, stdenv, cvs, zlib }:
  
  stdenv.mkDerivation rec {
    name = "cvsps-2.1";
    src = fetchurl {
      url = "http://www.cobite.com/cvsps/${name}.tar.gz";
      sha256 = "0nh7q7zcmagx0i63h6fqqkkq9i55k77myvb8h6jn2f266f5iklwi";
    };
  
  
negative.code:     '';
      homepage = http://www.cobite.com/cvsps/;
      license = stdenv.lib.licenses.gpl2;
      platforms = stdenv.lib.platforms.unix;
    };
  }
  