anchor.diff:    doInstallCheck = true;
     installCheckPhase = ''
       pushd ${src}
  -    $out/bin/cquery --ci --clang-sanity-check && \
       $out/bin/cquery --ci --test-unit
     '';
   
  
positive.code:     license     = licenses.mit;
      platforms   = platforms.linux ++ platforms.darwin;
      maintainers = [ maintainers.tobim ];
      priority    = 3;
    };
  }
  
negative.code: in
  stdenv.mkDerivation rec {
    name    = "cquery-${version}";
    version = "2018-05-01";
  
    inherit src;
  
  