chgems is not playing nicely with zsh and chruby about chgems HOT 8 CLOSED

It appears the GEM_HOME / GEM_PATH variables are not being exported to the sub-shell. Could you echo their values from within the sub-shell?

from chgems.

Here are the values:

• GEM_HOME: /Users/janogonzalez/.gem/ruby/2.0.0
• GEM_PATH: /Users/janogonzalez/.gem/ruby/2.0.0:/Users/janogonzalez/.rubies/ruby-2.0.0-p247/lib/ruby/gems/2.0.0:/Users/janogonzalez/.gem/ruby/2.0.0

I also noticed that chgems works properly when used without chruby.

from chgems.

Reproduced. Somehow chruby is incorrectly removing the gem dir added by chgems.

.zshrc

source /usr/local/share/chruby/chruby.sh
echo "Before: $GEM_PATH"
chruby ruby-2.0
echo "After: $GEM_PATH"

Output

$ chruby
   jruby-1.7.4
   rubinius-2.0.0-rc1
   ruby-1.8.7-p374
   ruby-1.9.3-p448
 * ruby-2.0.0-p247
$ chgems
Entering /vault/1/code/ronin with gems in .gem/ruby/2.0.0/ ...
Before: /vault/1/code/ronin/.gem/ruby/2.0.0:/home/hal/.gem/ruby/2.0.0:/opt/rubies/ruby-2.0.0-p247/lib/ruby/gems/2.0.0
After: /home/hal/.gem/ruby/2.0.0:/opt/rubies/ruby-2.0.0-p247/lib/ruby/gems/2.0.0:/home/hal/.gem/ruby/2.0.0

from chgems.

Ah ha, the problem is your calling chruby 2.0 in .zshrc. Before switching to a new Ruby, chruby_use will call chruby_reset which cleans PATH, GEM_PATH and unsets GEM_HOME. Since chgems spawns a sub-shell with GEM_HOME set, chruby_reset thinks it's another Ruby's GEM_HOME and removes it from PATH/GEM_PATH.

from chgems.

Double ah ha. The solution is to put chruby ruby-2.0 in ~/.zprofile, which will only be loaded when spawning login shells, not sub-shells.

from chgems.

.zprofile is loaded before .zshrc so the solution is not working. I also tried the autoswitching approach without any luck. I don't know enough zsh to find the solution so I will try to find someone to help me.

Maybe a shell function is the way to make it work in zsh?

from chgems.

Try putting the following in .zprofile:

source /usr/local/share/chruby/chruby.sh
chruby ruby-2.0

from chgems.

Oh, a zsh user pointed out that .zlogin is loaded after .zshrc. Perhaps I should recommend using that file instead of .zprofile.

from chgems.