I am developing Rails engine that uses HAML for views templates. So my gemspec has following: line
s.add_runtime_dependency 'haml', ">= 3.0.18"
But when I use this gem in an application that does not use HAMl itself, HAML does not seem to be initialized (though Gemfile.lock clearly states that it is in dependencies).
Should I add some HAML initialization in the engine code ?
I faced same issue. Fixed by requiring haml in engine.rb
require 'haml'