From: Kelly Dwight Felkins <railsinator@...>
Date: 2005-12-10T04:02:52+09:00
Subject: Re: home of the gems?

------=_Part_9948_6600054.1134154950403
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
Content-Disposition: inline

I think rails can find the gems. Do you know how rails does it?

I'm not certain that rails uses gems *after* an application has been
created. Rails is installed as a collection of gems, but I guess it is
possible that when you create a rails application all of the required
libraries are copied or linked, though I doubt it.

-kelly


On 12/9/05, Jim Weirich <jim@weirichhouse.org> wrote:
>
> railsinator wrote:
> > Thanks for getting back to me Jim. Please bear with me as I try to
> > understand how this works.
> >
> > If I do "gem env" I get a stack trace:
> >
> > kfelkins@lurch:~/bin$ gem env
> > /usr/local/lib/site_ruby/1.8/rubygems.rb:194:in `report_activate_error'=
:
> > Could not find RubyGem sources (> 0.0.0) (Gem::LoadError)
> >     from /usr/local/lib/site_ruby/1.8/rubygems.rb:136:in `activate'
> >     from /usr/local/lib/site_ruby/1.8/rubygems.rb:37:in
> > `require_gem_with_options'
> >     from /usr/local/lib/site_ruby/1.8/rubygems.rb:31:in `require_gem'
> >     from
> > /usr/local/lib/site_ruby/1.8/rubygems/remote_installer.rb:403:in
> > `sources'
> >     from /usr/local/lib/site_ruby/1.8/rubygems/gem_commands.rb:897:in
> > `execute'
> >     from /usr/local/lib/site_ruby/1.8/rubygems/command.rb:49:in `invoke=
'
> >     from /usr/local/lib/site_ruby/1.8/rubygems/cmd_manager.rb:92:in
> > `process_args'
> >     from /usr/local/lib/site_ruby/1.8/rubygems/cmd_manager.rb:65:in
> > `run'
> >     from /usr/local/lib/site_ruby/1.8/rubygems/gem_runner.rb:9:in `run'
> >     from /home/kfelkins/bin/gem:17
> > kfelkins@lurch:~/bin$
> >
> > Still, my rails app will run when I start it with script/server.
> >
> > So clearly there are a set of gems installed somewhere. These were
> > likely
> > installed via the debian package management system. So how are gems
> > found?
> >
> > kfelkins@lurch:~/bin$ echo $GEM_HOME
> > /home/kfelkins/gem-repository
> > kfelkins@lurch:~/bin$ ls -l $GEM_HOME
> > total 16
> > drwxrwxr-x  2 kfelkins genome 4096 2005-12-08 17:15 cache
> > drwxrwxr-x  2 kfelkins genome 4096 2005-12-08 17:15 doc
> > drwxrwxr-x  2 kfelkins genome 4096 2005-12-08 17:15 gems
> > drwxrwxr-x  2 kfelkins genome 4096 2005-12-08 17:15 specifications
> > kfelkins@lurch:~/bin$ cd $GEM_HOME/gems
> > kfelkins@lurch:~/gem-repository/gems$ ls
> > kfelkins@lurch:~/gem-repository/gems$ echo $GEM_PATH
> >  kfelkins@lurch:~/gem-repository/gems$
>
> Ok, it looks like you no longer have the system gem repository in your
> GEM_PATH.  Gem can't find its sources gem.
>
> Try adding the original repository to the GEM_PATH.  Perhaps something
> like this:
>
>    export GEM_PATH=3D/usr/local/lib/ruby/gems/1.8
>
> (you might need to tweek the directory for your local system).
>
> Once you add that line, gems should search both your $GEM_HOME
> repository and the GEM_PATH repository.  You can add more repositories
> to GEM_PATH if you wish.
>
> -- Jim Weirich
>
> --
> Posted via http://www.ruby-forum.com/.
>
>

------=_Part_9948_6600054.1134154950403--