Install won't work

[jmunozz]

Hi,
I wanted to test solidata on local.
Either with manual install (cf README) or using make gunicorn-dev, i am unable to start the backend.

#9 20.41 ERROR: Cannot install -r requirements.txt (line 51) and urllib3==1.25.3 because these package versions have conflicting dependencies.
#9 20.41 ERROR: ResolutionImpossible: for help visit https://pip.pypa.io/en/latest/user_guide/#fixing-conflicting-dependencies
#9 20.57 WARNING: You are using pip version 21.2.4; however, version 21.3.1 is available.
#9 20.57 You should consider upgrading via the '/usr/local/bin/python -m pip install --upgrade pip' command.

I encounter a version problem.
When manually install dependancies (pip install urllib3 and other dependancies that are not mentionned in requirements.txt), I still block on something that might be due to python version.

--- STARTING SOLIDATA API ---

Traceback (most recent call last):
  File "/Users/ledjodje/projects/solidata/solidata-backend/appserver.py", line 197, in <module>
    app_runner()
  File "/Users/ledjodje/projects/solidata/solidata-backend/venv/lib/python3.9/site-packages/click/core.py", line 1130, in __call__
    return self.main(*args, **kwargs)
  File "/Users/ledjodje/projects/solidata/solidata-backend/venv/lib/python3.9/site-packages/click/core.py", line 1055, in main
    rv = self.invoke(ctx)
  File "/Users/ledjodje/projects/solidata/solidata-backend/venv/lib/python3.9/site-packages/click/core.py", line 1404, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/Users/ledjodje/projects/solidata/solidata-backend/venv/lib/python3.9/site-packages/click/core.py", line 760, in invoke
    return __callback(*args, **kwargs)
  File "/Users/ledjodje/projects/solidata/solidata-backend/appserver.py", line 150, in app_runner
    from solidata_api.application import create_app
  File "/Users/ledjodje/projects/solidata/solidata-backend/solidata_api/application.py", line 139
    from solidata_api._core.async_tasks import async
                                               ^
SyntaxError: invalid syntax

Could you update the install process ?
Thanks