ERROR: Command errored out with exit status 1: 'xxx\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'xxx\\setup.py'"'"'; __file__='"'"'xxx\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'xxx\install-record.txt' --single-version-externally-managed --compile --install-headers 'xxx\cvxopt' Check the logs for full command output.