Not a dependency of github-pages

[mrmanc]

Describe the bug

I’ve just had to add jekyll-include-cache as an explicit gem in a site’s Gemfile, which feels odd as other plugins come in as dependencies of github-pages. https://help.github.com/articles/configuring-jekyll-plugins/ indicates that it is a supported plugin, and yet it doesn’t seem to be a dependency. Should https://pages.github.com/versions/ now show jekyll-include-cache as an available plugin?

Steps to reproduce the behavior

1. Build a site with https://github.com/mmistakes/minimal-mistakes/ as the remote theme and no version set, with only the github-pages gem specified in the Gemfile.

Expected behavior

The site should build.

Instead you get an error stating:

Dependency Error: Yikes! It looks like you don't have jekyll-include-cache or one of its dependencies installed. In order to use Jekyll as currently configured, you'll need to install this gem. The full error message from Ruby is: 'cannot load such file -- jekyll-include-cache' If you run into trouble, you can find helpful resources at https://jekyllrb.com/help/!

… as reported here: mmistakes/minimal-mistakes#1875. I know this can be fixed by adding the plugin as a gem dependency but that doesn’t feel right if this is intended to be a supported GHP plugin.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.