How to clear out your rbenv managed rubies and trigger Boxen to redownload the rebuilt, faster native binaries

INSTRUCTIONS.md

1. Upgrade your Ruby module to 4.1.0 (this isn't strictly necessary, but there's a lot of good stuff)
2. Remove existing installed 1.9.3 and 2.0.0 versions:

for version in `rbenv versions --bare | grep 1.9.3`; do
  rbenv uninstall $version
done

for version in `rbenv versions --bare | grep 2.0.0`; do
  rbenv uninstall $version
done

1. Run boxen

Change the github "ruby" line in your Puppetfile from the version you are currently using, to 4.1.0: https://github.com/boxen/our-boxen/blob/master/Puppetfile#L30
You will also need to change github "stdlib" to 4.0.0 as per boxen/puppet-ruby#22

Then run Boxen to download the latest modules