BUNDLE_WITHOUT Heroku Cedar fix

Gemfile

gem 'rails'

# hack to make heroku cedar not install special groups
def hg(g)
  (ENV['HOME'].gsub('/','') == 'app' ? 'test' : g)
end

group hg(:cucumber) do
  gem 'cucumber-rails'
  gem 'capybara'
  gem 'database_cleaner'
end

# command line tools
group hg(:tools) do
  gem 'heroku'
  gem 'taps'
  gem 'ZenTest'
end

# mac os x specific
group hg(:darwin) do
  gem 'autotest-growl'
  gem 'autotest-fsevent'
end

unfortunately it doesn't help with the situation where you want to have a :path source for a development group gem :(