Got the "can't activate" Gem::Exception Blues? gem cleanup!
What to do when rubygems can’t activate a version of a gem because it’s already activated a different version of the same gem? My Google magic wasn’t good enough to find this one quickly, so I’ll happily point out Jesse Hu’s nearly one-year-old post about the same problem, descended from a Ruby on Rails thread on ruby-forum.com where, unsurprisingly, it’s Jeremy McAnally who knows that
gem cleanup is the way to go.
Took nearly 45 minutes. Freed untold amounts of disk. Much happiness.
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