anchor.diff:    ] ++ lib.optional (apis != ["*"])
       "-DBUILD_ONLY=${lib.concatStringsSep ";" apis}";
   
  -  # fix build with gcc9, can be removed after bumping to current version
  -  NIX_CFLAGS_COMPILE = [ "-Wno-error" ];
  -
     # aws-cpp-sdk-core-tests/aws/client/AWSClientTest.cpp
     # seem to have a datarace
     enableParallelChecking = false;
  
positive.code:     license = licenses.asl20;
      platforms = platforms.unix;
      maintainers = with maintainers; [ eelco orivej ];
    };
  }
  
negative.code: 
    __darwinAllowLocalNetworking = true;
  
    # Builds in 2+h with 2 cores, and ~10m with a big-parallel builder.
    requiredSystemFeatures = [ "big-parallel" ];
  
  