Maintaing GEM_HOME with rbenv + omg

gistfile1.sh

# Trying to use http://blog.zenspider.com/blog/2012/09/ohmygems.html
#
# When I run "omg sample" and install a gem (via "gem install" or "bundle install"), it
# is still going into the "global" directory though.
#
# I may be doing something wrong, but, it seems like GEM_HOME is not being maintained
# in rbenv's shim commands.
#
# What am I doing wrong?


#####################
# Clean shell
#####################
tom/
$ echo $GEM_PATH


tom/
$ echo $GEM_HOME


tom/
$ gem env home
/Users/tom/.rbenv/versions/1.9.3-p286/lib/ruby/gems/1.9.1


tom/
$ gem env path
/Users/tom/.rbenv/versions/1.9.3-p286/lib/ruby/gems/1.9.1:/Users/tom/.gem/ruby/1.9.1


#####################
# Go into directory
#####################
tom/
$ cd sample

#####################
# Set up omg env
#####################
sample/
$ omg sample
Switching to sample

GEM_PATH=:
GEM_HOME=/Users/tom/.gem/repos/sample
PATH=/Users/tom/.rbenv/shims:/Users/tom/.rbenv/bin:/Users/tom/local/bin:/usr/local/homebrew/bin:/usr/local/pgsql/bin:/usr/local/mysql/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/opt/X11/bin:/Users/tom/.gem/repos/sample/bin

#####################
# Verify settings were...set...
#####################
sample/
$ echo $GEM_HOME
/Users/tom/.gem/repos/sample

sample/
$ echo $GEM_PATH
:                      # <------- NOTE: this seems wrong to me...shouldn't affect gem installation afaik


sample/
$ rbenv which gem
/Users/tom/.rbenv/versions/1.9.3-p286/bin/gem

#####################
# PATH picked up by gem
#####################
sample/
$ gem env path
/Users/tom/.rbenv/versions/1.9.3-p286/lib/ruby/gems/1.9.1:/Users/tom/.gem/ruby/1.9.1

#####################
# HOME picked up by gem
#####################
sample/
$ gem env home
/Users/tom/.rbenv/versions/1.9.3-p286/lib/ruby/gems/1.9.1