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