Hello,
Just sharing the information not to make my work duplicate.
I am planning to update rubygem-sinatra 1.x to latest version 2.0.0.
and am going to add "mustermann" as Fedora Package rubygem-mustermann that is
used as runtime dependency from sinatra 2.0.0.
https://rubygems.org/gems/sinatra
https://rubygems.org/gems/mustermann
Regards,
Jun