anchor.diff:        '';
   
         src = fetchurl {
  -        inherit url sha256;
  +        url = "http://www.php.net/distributions/php-${version}.tar.bz2";
  +        inherit sha256;
         };
   
         meta = with stdenv.lib; {
  
positive.code:     sha256 = "1bnjpj5vjj2sx80z3x452vhk7bfdl8hbli61byhapgy1ch4z9rjg";
    };
  
    php70 = lib.lowPrio (generic {
      version = "7.0.0RC6";
      url = "https://downloads.php.net/~ab/php-7.0.0RC6.tar.bz2";
      sha256 = "0q8km0711chwj94d4mjrzdn999yw1vv4k695gj68pk791a6pcsyk";
    });
  
  }
  
negative.code: let
  
    generic =
      { version, sha256 }:
  
      let php7 = lib.versionAtLeast version "7.0"; in
  
  