WARN: libevent/2.1.12: requirement openssl/1.1.1g overridden by folly/2019.10.21.00 to openssl/1.1.1h 
ERROR: Conflict in cmake/3.16.2:
    'cmake/3.16.2' requires 'openssl/1.1.1i' while 'libevent/2.1.12' requires 'openssl/1.1.1h'.
    To fix this conflict you need to override the package 'openssl' in your root package.