Changelog for ruby2.5-rubygem-rbnacl-doc-4.0.2-lp150.6.1.x86_64.rpm :

* Tue Dec 26 2017 mrueckertAATTsuse.de- switch the requires to libsodium-devel
* Tue Oct 31 2017 mrueckertAATTsuse.de- only build for 2.3+ from now
* Fri Oct 13 2017 mrueckertAATTsuse.de- bump to libsodium23
* Tue Aug 22 2017 mrueckertAATTsuse.de- initial package