setup.py commands not found

[venomega]

please what am i doing wrong
i just create a default project with
briefcase new
cd helloworld
briefcase create android
an it says
Template does not support 3.9

and if i do
cookiecutter https://github.com/pybee/briefcase-template
cd helloworld
python setup.py android -s
it says

usage: setup.py [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...]
   or: setup.py --help [cmd1 cmd2 ...]
   or: setup.py --help-commands
   or: setup.py cmd --help

error: invalid command 'android'

does not work for any command writed inside setup.py
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[venomega]

im using archlinux, i have create an new rootfs an install everything inside that rootfs, i tried with venv too and does not work, say same errors

[freakboy3742]

After you ran briefcase new, you received an error message "Template does not support 3.9".

That's the cause of the problem. Briefcase requires binary components, and we haven't prepared those components for Python 3.9. If you use Python 3.8 or earlier, you won't get that error.

The subsequent error about "setup.py not found" is an error of usage; you've cloned an old version of the template, which didn't support Android.