How to install gem from GitHub source?

Question

I would like to install gem from the latest GitHub source.

How do I do this?

Answer 1

well, that depends on the project in question. Some projects have a *.gemspec file in their root directory. In that case, it would be

gem build GEMNAME.gemspec gem install gemname-version.gem 

Other projects have a rake task, called "gem" or "build" or something like that, in this case you have to invoke "rake ", but that depends on the project.

In both cases you have to download the source.

Answer 2

In case you are using bundler, you need to add something like this to your Gemfile:

gem 'redcarpet', :git => 'git://github.com/tanoku/redcarpet.git' 

And in case there is .gemspec file, it should be able to fetch and install the gem when running bundle install.

UPD. As indicated in comments, for Bundler to function properly you also need to add the following to config.ru:

require "bundler"  Bundler.setup(:default)