[Rails] Freezing Architecture-Dependent Gems such as Rmagick, Ferret, Unicode

[Tim Case]

A lot has been made recently about the need to freeze your gems for
production deployment on a shared server so your application can
depend on it's own gem version instead of being subjected to whatever
gem is installed on the server, but does this rule of thumb come with
an exception?  Architecture dependent gems such as RMagick, Ferret and
Unicode have dependencies that cannot be included as a frozen gem, and
with these types of gems you still are left depending on the one
installed the server?

Yes or no?

Thanks,

Tim Case
tim at karmacrash.com