Changelog for ruby2.4-rubygem-optimist-3.0.0-3.1.x86_64.rpm :

* Sat Jan 19 2019 mrueckertAATTsuse.de- rb_build_ruby_abi needs to be rb_build_ruby_abis
* Fri Jan 18 2019 mrueckertAATTsuse.de- use rb_build_ruby_abi instead of rb_default_ruby_abi
* Thu Sep 20 2018 mrueckertAATTsuse.de- initial package