Updated ruby on OS X 12 using HomeBrew

My old Gemfile.lock had a dependency with a known DoS vulnerability and Github notified me to fix. This ran into some issues of OS X 12 install of ruby (v 2.0.0) so I decided to switch over to HomeBrew and manage my own ruby env there.

Setup

Install HomeBrew:

ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

Now set up with rbenv to manage different ruby install versions

brew update && brew upgrade
brew doctor

brew install rbenv
brew install ruby-build
echo 'export RBENV_ROOT=/usr/local/var/rbenv' >> ~/.bash_profile
echo 'if which rbenv > /dev/null; then eval "$(rbenv init -)"; fi' >> ~/.bash_profile

rbenv install -l
rbenv install 2.4.0

Open a new terminal and rbenv shell 2.4.0

Check this has all completed correctly with rbenv versions should show OS X v of 2.0.0 and my installed version of 2.4.0. Then check with ruby --version now that I have set the global for this bash session to 2.4.0 and it should return that as the version. Can also check the ruby location with which ruby.

Then install bundler with gem install bundler Then install jekyll with gem install jekyll

Once this was completed I changed to my github pages directory in my terminal session. Then I used bundle to check my Gemfile and install the dependencies:

bundle
bundle install

That updated my Gemfile.lock to the latest versions of dependcies for Github pages.

Ongoing maintenance

To move from the system to another ruby version per shell session start with

rbenv shell 2.4.0

Then run

bundle exec jekyll serve