gem compass install fails on OS X 10.11

Running: sudo gem install compass

I receive the following error:

ERROR: While executing gem ... (Errno::EPERM)
Operation not permitted - /usr/bin/compass

Any suggestions?

Solution

This worked for me (no idea why): danielgolden @ https://github.com/Compass/compass/issues/2018

brew install ruby
sudo gem update --system
sudo gem install compass

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