pry --plugins causes Pry to crash

[thomaswuensche]

Since PR #2119 removed autoloading of plugins, the method Pry.locate_plugins was also removed.
The command pry --plugins still uses this method, which causes Pry to crash.

Stacktrace:

$ pry --plugins
Installed Plugins:
--
Traceback (most recent call last):
	11: from /Users/thomas/.rbenv/versions/2.7.2/bin/pry:23:in `<main>'
	10: from /Users/thomas/.rbenv/versions/2.7.2/bin/pry:23:in `load'
	 9: from /Users/thomas/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/pry-0.13.1/bin/pry:12:in `<top (required)>'
	 8: from /Users/thomas/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/pry-0.13.1/lib/pry/cli.rb:68:in `parse_options'
	 7: from /Users/thomas/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/pry-0.13.1/lib/pry/slop.rb:69:in `parse!'
	 6: from /Users/thomas/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/pry-0.13.1/lib/pry/slop.rb:229:in `parse!'
	 5: from /Users/thomas/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/pry-0.13.1/lib/pry/slop.rb:229:in `each_with_index'
	 4: from /Users/thomas/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/pry-0.13.1/lib/pry/slop.rb:229:in `each'
	 3: from /Users/thomas/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/pry-0.13.1/lib/pry/slop.rb:232:in `block in parse!'
	 2: from /Users/thomas/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/pry-0.13.1/lib/pry/slop.rb:503:in `process_item'
	 1: from /Users/thomas/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/pry-0.13.1/lib/pry/slop/option.rb:85:in `call'
/Users/thomas/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/pry-0.13.1/lib/pry/cli.rb:169:in `block (2 levels) in <top (required)>': undefined method `locate_plugins' for Pry:Class (NoMethodError)

The question is whether to remove the command altogether or to implement a different way of listing plugins.
(maybe looking for every require in .pryrc?)

[kyrylo]

Sorry, I released a new version and forgot about this issue. I would probably remove it altogether. You can achieve the same thing with gem list pry-. No need to keep --plugins. Are you willing to contribute a PR? :)

[kyrylo]

Fixed by #2180