Is there a clean way to ensure that a particular rails project uses a
particular version of rake?
I had a problem when a gem (calendar_date_select) upgraded my rake gem.
The newer version (0.8.4) wasn't backward compatible with the older one
(0.7.3). Running 'rake' seems to use the latest version of rake,
regardless of the version of Rails, i.e. I'd specified
"RAILS_GEM_VERSION = '1.2.5'" in environment.rb.