Gemsets

Las gemas constituyen la forma típica de distribución de códigos Ruby. Puesto que a menudo diferentes versiones de una misma gema entran en conflicto, es conveniente tener espacios de trabajo separados que contienen diferentes conjuntos de gemas. A estos espacios rvm los denomina gemsets.

[~]$ rvm gemset list

gemsets for ruby-2.0.0-p0 (found in /Users/casiano/.rvm/gems/ruby-2.0.0-p0)
   (default)
   global
=> rails3tutorial2ndEd

RVM by default allows creating multiple environments for one ruby - called gemsets.

Gemsets can be specified together with ruby name using gemsets separator(@):

 ruby-1.9.3-p125@my-project

During installation of Ruby, RVM creates two gemsets:

• default - automatically selected when no @gemset specified: rvm use 1.9.3
• global - super gemset, inherited by all other gemsets for the given ruby

A little bit about where the default and global gemsets differ:

• If you don't use a gemset at all, you get the gems in the default set. default is the gemset used without selecting one for a specific installed ruby.
• If you use a specific gemset (say @testing), it will inherit gems from that ruby's @global. The global gemset is to allow you to share gems to all your gemsets.