(Not sure if this is already a feature, and I just could not get it to work.)

I want my validator automatically detected using the "$schema" keyword, to leave it customizable. But I would also need the formats to be validated. I know I could use validate(instance, schema, format_checker=draft202012_format_checker). But I would like to just use the corresponding format_checker. Meaning, if my "$schema" keyword leads to using the Draft202012Validator, I would want to automatically use the draft202012_format_checker. If I use Draft7Validator, use the draft7_format_checker, etc.

My proposal would be to accept format_checker=True, to then use the corresponding Format Validator.