Packaging commands in Ruby and Python

Install a package
gem install package
pip install package
Install with a version
gem install -v 1.2.3 package
pip install package==1.2.3
Install a runtime version
rvm install ree
# Install normally from source or binary distribution
Create a package set
rvm gemset create mygemset
virtualenv myenv
Activate a package set
rvm use ree@mypackages
source myenv/bin/activate
Activate a runtime version
rvm use ree-1.8.7
# Happens for free via virtualenv:
python2.5 -m virtualenv myenv
source myenv/bin/activate
Create a package sandbox
# Create a gemfile containing:
source :rubygems
gem mypackage

# Then bundle:
# Install packages normally after activating virtualenv
pip install mypackage

# Then freeze:
pip freeze > requirements.txt
Activate an existing package sandbox
# Activate a virtualenv, then:
pip install -r requirements.txt
Execute a script within the sandbox
bundle exec myscript.rb
# Nothing special required after activating virtualenv
Activate a dependency set in code
require 'rubygems'
require 'bundler'
# Nothing special required after activating virtualenv

Want to see them in action? Try our "Packaging in Ruby and Python" screencast.