Updating to RubyGems 1.8Edit

The RubyGems team has gone on a deprecation frenzy, meaning that after running sudo gem update --system every gem command is likely to spew a bunch of deprecation warnings across the screen.

To silence those, you'll need to do:

$ sudo gem pristine --all --no-extensions

Followed by individually for each extension, potentially with optional build arguments after a --:

$ sudo gem pristine json

See also

• http://blog.zenspider.com/2011/05/rubygems-18-is-coming.html