#haml.download
Standard Gem
Most people will just want the standard stable Haml gem. To install this:
gem install haml
haml-edge Gem
To get the latest and greatest Haml goodness, though, you’ll need something else. A haml-edge gem is created automatically every time changes are made to the master branch. To install it:
gem install haml-edge
Note that gem "haml-edge" must be used before require 'haml' if haml-edge is to be used.
Installation from Git
Haml can also be installed directly from the Git repository:
git clone git://github.com/nex3/haml.git
cd haml
rake install
Downloadable Archives
Finally, archives of current and old releases are available on Rubyforge.