Execute specific version of a gem

Question

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How can I call an older version of a gem from the commandline?

If I have two versions of a gem, how do I choose which version to execute?

For example, if gem list heckle gives me

*** LOCAL GEMS ***

heckle (2.0.0.b1, 1.4.3)

and heckle --version from the command line gives me

heckle 2.0.0.b1

how can I tell it to run heckle 1.4.3 instead?

Would I need to use bundler in order to do that? If so, how much yak shaving would be involved?

something like `require "heckle1.4.3"` might work – Ionut Hulub Oct 15 '12 at 00:24 — Ionut Hulub, Oct 15 '12 at 00:24

score -3 · Answer 1 · answered Oct 15 '12 at 00:35

-3

You can easily do this with RubyGems.

For example:

require 'rubygems' # if RUBY_VERSION < 1.9
gem 'example', '1.2'

But using of Bundler is already a better solution.

answered Oct 15 '12 at 00:35

Sergey Gerasimov

2

I'm asking about running a gem from the command line. – Andrew Grimm Oct 15 '12 at 02:25
Ok, and this you can do with Bundler - specify gem version wIn Gemfile and operate with `bundler exec whateveryouwant`. – Sergey Gerasimov Oct 15 '12 at 10:08

1 Answers1