Around 1AM PST last night, Ruby 2.0.0-p0 was released with goodies like default support of UTF-8, symbol list creation, binary search in arrays, and many background optimizations. What I am quite excited about is a new experimental feature called Refinements to override method within a specific context only.
Upon discovering the news at about 3AM last night, I decided to upgrade before I sleep. This may have been my worst decision of the night.
Here is the list of commands to use to upgrade your rvm with ruby 2.0.0-p0 with the least number of surprises. We will talk about surprises later:
Update to the latest RVM:
rvm get head
Install requirements:
rvm requirements run
Install OpenSSL:
rvm pkg install openssl
Install Ruby 2.0.0-p0 with OpenSSL:
rvm install 2.0.0 --with-openssl-dir=$rvm_path/usr
Tell RVM to use Ruby 2.0.0:
rvm use 2.0.0
Confirm you have Ruby 2.0.0:
rvm current
ruby --version
The first test is goto your Rails project root and run bundler:
bundle
It is most likely you will get this error:
Bundler is not compatible with Ruby 2.0.
Please upgrade to Bundler 1.3 or higher.
Unfortunately, if you run gem update bundler, the newest version is only bundler-1.2.4.
You need to install the prereleased bundler-1.3.0 branch, currently 1.3.0.pre.8:
gem install bundler --pre
Should you encounter conflicts with older versions of bundler:
gem uninstall bundler
and select the older version to uninstall.
Now run bundle again, and everything should work right!
Horray!
If you encounter this error in other terminal windows:
ERROR: Gem bundler is not installed, run 'gem install bundler' first.
Run:
rvm reload
Now if your installation wasn’t as smooth as what was described above, here are some side notes:
When installing the requirements:
rvm requirements run
Should you run into permission problems, most likely you had the same problem as me, which was not having the right permission to modify contents in ~/.rvm as my system drive was migrated from a previous laptop. (Tip: sudo rvm requirements run won’t help. I discovered this the hard way.)
The quickest fix I found was just to delete RVM and reinstalling it.
Remove RVM:
sudo rm -rf ~/.rvm
Install RVM with MRI:
curl -L https://get.rvm.io | bash -s stable --ruby
Alternatively, install RVM with MRI and Rails:
curl -L https://get.rvm.io | bash -s stable --rails
Additional Tip:
With the new version of Ruby, RVM will create a new gemset and install new gems. When this happens, it will generate RDoc and RI pages, which can take up quite some time.
If you don’t need those documentations (I always look from the web or github wiki pages), here is what you can do to speed things up by skipping them:
Create or modify ~/.gemrc and add the following line:
gem: --no-rdoc --no-ri
Courtesy of ruby on rails - Using –no-rdoc and –no-ri with bundler - Stack Overflow
Have fun with Ruby 2.0!
If you have any questions, feel free to find me at @rickypaipie. Sorry that I haven’t implemented a comments section for this blog yet.