That means that any of its binaries need two shared libraries that aren't available in the xbps repositories.

In this case this package specifically needs openssl and the sonames must be `lib{crypto,ssl}.so.1.0.0`.

Adding them to `common/shlibs` is a workaround for xbps-src but not enough with xbps. You'll have to
supply those shared libraries somehow in another pkg (openssl) or in the same package.