Public bug reported: To reproduce: grab a beta-1 ubuntu bionic iso, select "minimal install", apt install ruby-ronn, run "ruby-ronn -S ." and get:
eichin@vm-bionic-1:~$ ronn -S . Traceback (most recent call last): 5: from /usr/bin/ronn:140:in `<main>' 4: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require' 3: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require' 2: from /usr/lib/ruby/vendor_ruby/ronn/server.rb:2:in `<top (required)>' 1: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require' /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require': cannot load such file -- rack (LoadError) apt install ruby-rack gives: /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require': cannot load such file -- sinatra/base (LoadError) Finally, apt install ruby-sinatra yields a working server. (I suspect they were previously satisfied indirectly by something else; I don't know when the problem appeared beyond "it was fine in 16.04 and it's not fine in 18.04.") ** Affects: ruby-ronn (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1756621 Title: missing dependencies on ruby-sinatra, ruby-rack for -S To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ruby-ronn/+bug/1756621/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs