- adduser
- cron | cron-daemon
- dirmngr
- default-mta | postfix | mail-transport-agent
- lsb-base
- rake (>= 10.5.0~)
- ruby | ruby-interpreter
- ruby-activerecord (>= 5.2~)
- ruby-charlock-holmes
- ruby-gpgme (>= 2.0.13~)
- ruby-mail (>= 2.7.1~)
- ruby-mail-gpg (>= 0.3.3~)
- ruby-sinatra (>= 2~)
- ruby-sinatra-contrib (>= 2~)
- ruby-sqlite3
- ruby-thor
- thin