Simple management tool for different sets of Rubygems
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README.pod

gemset - manage different sets of Rubygems on your system

gemset is a simple solution for having different sets of Rubygems installed, and switching between them.

Features/Bugs

Works no matter which interactive shell you use: bash, zsh, csh, tcsh, fish etc, are all welcome.

Works outside of interactive shells. For example, if you change your default gemset even GUI applications started without a shell will have access to that gemset you changed to.

Works with Bundler.

It only depends on having ruby in your $PATH. If you want to manage the installations of different ruby interpreters, you can use rbenv or RVM. gemset will manage gem sets for the current ruby, so each interpreter have its separate gem sets.

Installation

Simplest method: just copy the gemset script into your $PATH.

You can also install using GNU autotools, using a release tarball:

$ ./configure && make && sudo make install

Or from the git repository (you will need autoreconf):

$ autoreconf -i && ./configure && make && sudo make install

Usage

Preparing the environment:

$ gemset setup
Now using gemset "default".

If you already have any gems installed, your current environment will be made the "default" gemset:

$ gemset setup
Your current Rubygems environment was moved to a gemset named "default".
Now using gemset "default".

Creating and using a gemset:

$ gemset create rails3
$ gemset use rails3
Now using gemset "rails3".
$ gem install rails3
[...]
$ gem list

*** LOCAL GEMS ***

abstract (1.0.0)
actionmailer (3.0.0)
actionpack (3.0.0)
activemodel (3.0.0)
activerecord (3.0.0)
activeresource (3.0.0)
activesupport (3.0.0)
arel (1.0.1)
builder (2.1.2)
bundler (1.0.0)
erubis (2.6.6)
i18n (0.4.1)
mail (2.2.6)
mime-types (1.16)
polyglot (0.3.1)
rack (1.2.1)
rack-mount (0.6.13)
rack-test (0.5.4)
rails (3.0.0)
railties (3.0.0)
rake (0.8.7)
ruby-prof (0.9.2)
sqlite3-ruby (1.3.1)
thor (0.14.0)
treetop (1.4.8)
tzinfo (0.3.23)

Now changing back to the default gemset:

$ gemset use default
Now using gemset "default".
$ gem list

*** LOCAL GEMS ***

bundler (1.0.0)

Listing existing gemsets (the gemset currently in use is marked with an `*` and printed in green):

$ gemset list
* default
  empty
  noosfero
  rails3

Inspecting gemset capabilities:

$ gemset  usage
gemset - manage different sets of Rubygems on your system

Usage:

  gemset list                lists the existing gemsets.
  gemset create [NAME]       creates a new gemset
  gemset remove [NAME]       removes an existing gemset
  gemset show [NAME]         shows the gems installed in a gemset
  gemset use [NAME]          change to using an existing gemset
  gemset help                displays usage information

Hacking

To run the tests:

$ bundle install
$ ruby test/runtests.rb

Copyright

Copyright © 2010-2011, Antonio Terceiro <terceiro@softwarelivre.org>

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.