anchor.diff:    pythonVersion = majorVersion;
     version = "${majorVersion}.${minorVersion}${minorVersionSuffix}";
     libPrefix = "python${majorVersion}";
  +  sitePackages = "lib/${libPrefix}/site-packages";
   
     buildInputs = filter (p: p != null) [
       glibc
  
positive.code:     echo "manylinux1_compatible=False" >> $out/lib/${libPrefix}/_manylinux.py
    '';
  
    passthru = rec {
      inherit libPrefix;
      zlibSupport = zlib != null;
      sqliteSupport = sqlite != null;
      dbSupport = db != null;
  
negative.code:     isPy3 = true;
      isPy35 = true;
      is_py3k = true;  # deprecated
      interpreter = "${self}/bin/${executable}";
    };
  
  