anchor.diff:        url = "http://www.squid-cache.org/Versions/v3/3.2/${name}.tar.bz2";
         sha256 = "13jlx3d6rqq7ajxs8bgn8a0mh932jhq6aa8032q205nxnhqs0l4l";
       };
  -    configureFlags = ["--enable-ipv6"];
       buildInputs = [openldap pam db4 cyrus_sasl libcap expat libxml2
         libtool openssl];
     };
  
positive.code:       url = http://www.squid-cache.org/Versions/v3/3.1/squid-3.1.15.tar.bz2;
        sha256 = "1300f44dd4783697bacc262a7a9b32dbc9f550367fe82b70262864fdff715a35";
      };
      configureFlags = ["--enable-ipv6"];
    };
  
    squid32 = squid30.merge rec {
  
negative.code:       sha256 = "3e54ae3ad09870203862f0856c7d0cca16a85f62d5012085009003ee3d5467b4";
      };
  
      configureFlags = ["--enable-ipv6" "--disable-strict-error-checking"];
  
      meta = {
        description = "http-proxy";
  