Ruby < 3.1 installs failing on Ubuntu 22.04 with an openssl error

Seems like ubuntu recently updated openssl to v3. This seems to clash with installing older ruby versions.

Fix it by having rvm use its own openssl version:

#> rvm pkg install openssl
#> rvm reinstall ruby-2.7.8 --with-openssl-dir=$HOME/.rvm/usr

See https://github.com/rvm/rvm/issues/5209 for more details.

Cleanup RVM

The hard way (remove all gems):

$ rvm all-gemsets do gem cleanup

Remove stale source files and archives and other obsolete stuff:

$ rvm cleanup all

To avoid duplicate gems enable the gem cache:

$ rvm gemset globalcache enable