While depending on a local checkout (during development),
bundle install reported an invalid gemspec:
coffeelint at (...) did not have a valid gemspec.
This prevents bundler from installing bins or native extensions, but that may not affect its functionality.
The validation message from Rubygems was:
["coffeelint/lib/coffeelint.js"] are not files
While depending on a local checkout (during development), bundle install reported an invalid gemspec:
Since rubygems does not allow to append to the files accessor (http://guides.rubygems.org/specification-reference/#files), the coffeelint/lib/coffeelint.js was not available during install.