Crossandra v2.1.0 and v2.2.0 fail on mypyc wheels

[trag1c]

MRE:

from enum import Enum

from crossandra import Crossandra


class Token(Enum):
    FOO = "x"


Crossandra(Token)

Traceback (most recent call last):
  File "/Users/trag1c/dev/playground/temp-b9b2ed1/main.py", line 10, in <module>
    Crossandra(Token)
  File "crossandra/lib.py", line 103, in __init__
  File "crossandra/lib.py", line 40, in generate_tree
TypeError: dict object expected; got None

File "crossandra/lib.py", line 40, in generate_tree

crossandra/crossandra/lib.py

Lines 33 to 44 in 2e740e6

	def generate_tree(inp: Iterable[tuple[str, Enum]]) -> Tree:
	inp = sorted(inp, key=lambda v: len(v[0]), reverse=True)
	result: Tree = {}
	for k, v in inp:
	curr = result
	for c in k[:-1]:
	curr = cast(Tree, curr.setdefault(c, {}))
	if dct := cast(Tree, curr.get(k[-1])):
	dct[""] = v
	else:
	curr[k[-1]] = v
	return result

Seems like mypyc doesn't like casts?