Use of the "source" string throughout the Anod class.

[grouigrokon]

There are numerous tests in the Anod class (e3/anod/spec.py) which refer to a "source" string.

There is a SOURCE_PRIMITIVE (which could be defined out of the TYPE_CHECKING) which could be used.

The Anod class could define an is_source property like:

@property
def is_source(self) -> bool:
    return self.kind == SOURCE_PRIMITIVE

[enzbang]

note that we should avoid having too many properties / methods in Anod given that this pollutes all specs

[grouigrokon]

You mean inherit ;)
Five uses of == "source" in python files.
Two uses of == "source" in anod files.
No anod file defines is_source.
If you think this is not enough to create a property, I may close the bug.