[Bundler] ::Bundler.default_gemfile finds the wrong Gemfile

[jonabc]

::Bundler.default_gemfile.basename is used in the bundler source when looking for a Gemfile in the applications source path.

The issue is that when licensed is run via bundle exec, Bundler sets the ENV["BUNDLE_GEMFILE"] variable which is given preference over searching for a Gemfile from the file system.

This fails when

• the application source path where dependencies are enumerated has a gems.rb file
• bundle exec runs licensed based on a Gemfile in a different location

In this scenario Bundler#gemfile_path will return $pwd/Gemfile which doesn't exist, rather than $pwd/gems.rb which does.

This seems like a low priority edge case, but might be fixable in combination with #23?