apischema as a non-optional requirement?

[klauer]

I'm considering making apischema a non-optional requirement.
For those that are unaware, it's what allows blark to easily (de)serialize parsed code to/from JSON directly from the blark.transform dataclasses.
It's currently made optional through a bit of hackery:

blark/blark/transform.py

Lines 26 to 36 in abce326

	try:
	# NOTE: apischema is an optional requirement; this should work regardless.
	import apischema
	from .apischema_compat import as_tagged_union
	except ImportError:
	apischema = None
	def as_tagged_union(cls: Type[T]) -> Type[T]:
	"""No-operation stand-in for when apischema is not available."""
	return cls

It's a reasonably light dependency, and it'd make things more convenient were it just a hard requirement.

Any thoughts, objections, emojis?

[engineerjoe440]

Sounds perfectly reasonable to me!