From: Jordi Massaguer Pla <jmassaguerpla@...>
Date: 2012-08-30T01:55:46+09:00
Subject: Re: How to add a non standard Gem path?

Quoting Iñaki Baz Castillo <ibc@aliax.net>:

> 2012/8/29 Jordi Massaguer Pla <jmassaguerpla@suse.de>:
>> You can try something like this:
>>
>> $:.unshift yourdirectory
>
> Hi, that is not what I'm looking for. $: is the same as $LOAD_PATH and
> contains directories in which Ruby searchs for libraries which
> "require" command. This is not the same as adding a new directory for
> Gem search.
>
> In fact, if I show the content of $: (or $LOAD_PATH) I get this (with
> Ruby 1.9 so rubygem is loaded):
>
> ["/usr/local/lib/site_ruby/1.9.1",
> "/usr/local/lib/site_ruby/1.9.1/x86_64-linux",
> "/usr/local/lib/site_ruby", "/usr/lib/ruby/vendor_ruby/1.9.1",
> "/usr/lib/ruby/vendor_ruby/1.9.1/x86_64-linux",
> "/usr/lib/ruby/vendor_ruby", "/usr/lib/ruby/1.9.1",
> "/usr/lib/ruby/1.9.1/x86_64-linux"]
>
> There is NOT the Gems directory (and it shouldn't since it's not the
> same concept).
>
>
>
> This is: I need to install several gems into /usr/local/gems/
> directory and make "require" to look there as now it looks in
> /var/lib/gems/1.9.1/ directory.
>
>
>
>> or use rvm (https://rvm.io/) <- you can use different ruby versions and
>> different gemsets.
>
> I cannot do that. It is not for something I need in my computer but
> for a library to be published.
>
>
>
>> or use GEM_HOME http://docs.rubygems.org/read/chapter/3
>
> Yes, I can do this (assuming that I've installed the gem "abcd" in
> /usr/local/gems/"):
>
>   export GEM_PATH=/usr/local/gems
>   irb -r abcd
>
> It works, but could I load any other Gem installed in the default
> /var/lib/gems/1.9.1/ directory? I've tested it right now and got a
> failure and a success, not sure yet... XD
>
>
> Thanks a lot.
>

what you are describing sound a lot like using bundler. With bundler  
you can install gems inside a "vendor" directory and when you start  
your application with "bundler exec aaa" it loads those. Actually  
rails uses bundler for managing the gems.

http://gembundler.com/

regards
jordi

>
> --
> Iñaki Baz Castillo
> <ibc@aliax.net>
>