Is this action magic? Where's the code that does the work?

[fearphage]

I'm just wondering how this works at all and if I can make similar code-free actions.

[thomaseizinger]

I guess this line in the action.yml explains things:

checkout/action.yml

Lines 21 to 23 in 94d077c

	runs:
	# Plugins live on the runner and are only available to a certain set of first party actions.
	plugin: 'checkout'

[fearphage]

Ahh, that was added after my issue. Thanks for the heads up.