Use multiple versions of rubygems with rvm?

The correct way is to created different named (-n) installs of the ruby you want installed and name them according to the rubygem version you want such as rvm --install use 1.9.2-nrg186 && rvm rubygems 1.8.6 && gem --list rvm --install use 1.9.2-nrg1810 && rvm rubygems 1.8.10 && gem --list The reason for this is that you can only have 1 version of rubygems active an any given time. This is also due to the fact that each ruby defines a dependency on a specific rubygems version that version is known or expected to work with (regardless of if it can work with another or not) This is the expected way to handle the multiple rubygems requirement and to eliminate potential problems. See https://gist.github.Com/1273035 for specifics detailing this.

The correct way is to created different named (-n) installs of the ruby you want installed and name them according to the rubygem version you want such as rvm --install use 1.9.2-nrg186 && rvm rubygems 1.8.6 && gem --list rvm --install use 1.9.2-nrg1810 && rvm rubygems 1.8.10 && gem --list The reason for this is that you can only have 1 version of rubygems active an any given time. This is also due to the fact that each ruby defines a dependency on a specific rubygems version that version is known or expected to work with (regardless of if it can work with another or not). This is the expected way to handle the multiple rubygems requirement and to eliminate potential problems.

See https://gist.github. Com/1273035 for specifics detailing this.

RVM has a new feature for this: use "rvm rubygems 1.6.2" to select that version of rubygems. Rvm rubygems 1.6.2 https://rvm.beginrescueend. Com/rubies/rubygems/ (see: "RubyGems CLI API" towards the bottom of the page) groups.google.com/group/rubyversionmanag....

This does not answer the question, namely how to use a different version of the gem executable, not different versions of various gems. – Brandon Tilley Oct 6 at 1:38 just realized this as well, and changed my answer – Tilo Oct 6 at 1:44 Looks good. Tested it out and you can place this in a .

Rvmrc file with no trouble. – Brandon Tilley Oct 6 at 2:21 @Brandon: thank you! – Tilo Oct 6 at 2:39 @Tilo, thanks very much, but rvm rubygems doesn't let me have two terminal sessions open at the same time with different versions.

I'll check out named rubies, though - that might be just what I need. – Grandpa Oct 6 at 23:35.

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