What does the new config.gems get you that the old $GEM_PATH and
$GEM_HOME does not?
See
http://wiki.rubyonrails.org/rails/pages/HowToUseMultipleGemRepositories
I just have a global gems repo, and the wider use-any-gem
functionality of vendor/gems for all gems, not just rails,
by setting:
GEM_HOME to RAILS_ROOT/gems
and setting:
GEM_PATH to $GEM_HOME:
What am I missing?
just
%mkdir gems gems/bin
%export GEM_HOME=gems
and so on. See the web page above.