anchor.diff:    meta = with lib; {
       description = "Python library for Unbound, the validating, recursive, and caching DNS resolver";
       license = licenses.bsd3;
  -    homepage = "http://www.unbound.net";
  +    homepage = "https://www.unbound.net";
       maintainers = with maintainers; [ leenaars ];
  -    platforms = lib.platforms.unix;
  +    platforms = platforms.unix;
     };
   }
  
positive.code:     cp .libs/_unbound.so .libs/libunbound.so* $out/${python.sitePackages}
      substituteInPlace _unbound.la \
        --replace "-L.libs $PWD/libunbound.la" "-L$out/${python.sitePackages}"
      '';
  
    installFlags = [
      "configfile=\${out}/etc/unbound/unbound.conf"
  
negative.code: 
    buildInputs = [ openssl expat libevent python ];
  
    postPatch = ''
      substituteInPlace Makefile.in \
        --replace "\$(DESTDIR)\$(PYTHON_SITE_PKG)" "$out/${python.sitePackages}" \
        --replace "\$(LIBTOOL) --mode=install cp _unbound.la" "cp _unbound.la"
    '';
  
    preConfigure = "export PYTHON_VERSION=${python.pythonVersion}";
  