inputs.who-to-greet.required should be set to false since the parameter has a default value

[ilyasotkov]

I can use this Action without supplying any inputs and the default for who-to-greet input variable is "World". Why is it documented (in action.yml and README.md) as required?

And more generally, why would Metadata syntax for GitHub Actions
specification even allow required: true and default to be specified together?

[ncalteen]

I believe the option to specify both required: true and default: is because the default value may not exist (if you're using one of the different actions contexts. For example, if you use the following:

inputs:
  who-to-greet:
    description: '...'
    required: true
    default: ${{ env.MY_ENV_VAR }}

If MY_ENV_VAR is not set, then the default value will be an empty string. Hence, setting this as a required input would prevent the action from trying to run without necessary inputs.

[ncalteen]

Hello! Closing this out for now, but if you're still running into any kind of issue please reopen and let me know! I will try to respond soon as I can :)