Comment 4 for bug 1310292

I agree that I expect ruby2.0 to be the only version installed and at the least the default version.

It appears update-alternatives no longer supports ruby out of the box as well.

# update-alternatives --config ruby
update-alternatives: error: no alternatives for ruby

It also seems strange to me that this package installs libjs-jquery.

The following extra packages will be installed:
  libjs-jquery libruby1.9.1 libruby2.0 ruby ruby1.9.1 rubygems-integration

What does jquery have to do with ruby?