Cannot deploy a .charm through libjuju

[davigar15]

Description of the problem: The charmcraft snap builds the charm leaving a .charm file inside the charm code folder. Libjuju don't supports it.

How to reproduce:

$ charmcraft build
Done, charm left in 'transmission.charm'

from juju import loop
from juju.model import Model

async def main():
    model = Model()
    await model.connect_current()

    try:
        await model.deploy("./transmission.charm")
    except JujuEntityNotFoundError as e:
        print(e.entity_name)
    finally:
        await model.disconnect()
if __name__ == '__main__':
    loop.run(main())

Output:

unknown facade CAASModelOperator
unexpected facade CAASModelOperator found, unable to decipher version to use
unknown delta type: id
Traceback (most recent call last):
  File "../../python-libjuju/examples/model.py", line 51, in <module>
    loop.run(main())
  File "/home/davigar15/code/python-libjuju/juju/loop.py", line 38, in run
    raise task.exception()
  File "../../python-libjuju/examples/model.py", line 36, in main
    await model.deploy("./transmission.charm")
  File "/home/davigar15/code/python-libjuju/juju/model.py", line 1422, in deploy
    metadata = yaml.load(metadata_path.read_text(), Loader=yaml.FullLoader)
  File "/usr/lib/python3.8/pathlib.py", line 1227, in read_text
    with self.open(mode='r', encoding=encoding, errors=errors) as f:
  File "/usr/lib/python3.8/pathlib.py", line 1213, in open
    return io.open(self, mode, buffering, encoding, errors, newline,
  File "/usr/lib/python3.8/pathlib.py", line 1069, in _opener
    return self._accessor.open(self, flags, mode)
NotADirectoryError: [Errno 20] Not a directory: 'transmission.charm/metadata.yaml'

[SimonRichardson]

@davigar15 I'm closing this as I believe we've fixed this now.