Fail to install when trying to use package with pyproject.toml in develop

[tyctor]

Hi

when i want to use package in develop
and package have only pyproject.toml (no setup.py)
installation fails

Develop: '/home/tyctor/projects/punctum.cz/src/django-tinymce'
Traceback (most recent call last):
  File "/tmp/tmpac98s9w_", line 13, in <module>
    with open('/home/tyctor/projects/punctum.cz/src/django-tinymce/setup.py') as f:
FileNotFoundError: [Errno 2] No such file or directory: '/home/tyctor/projects/punctum.cz/src/django-tinymce/setup.py'
While:
  Installing.
  Processing develop directory '/home/tyctor/projects/punctum.cz/src/django-tinymce'.

An internal error occurred due to a bug in either zc.buildout or in a
recipe being used:
Traceback (most recent call last):
  File "/home/tyctor/projects/punctum.cz/lib/python3.9/site-packages/zc/buildout/buildout.py", line 2252, in main
    getattr(buildout, command)(args)
  File "/home/tyctor/projects/punctum.cz/lib/python3.9/site-packages/zc/buildout/buildout.py", line 718, in install
    installed_develop_eggs = self._develop()
  File "/home/tyctor/projects/punctum.cz/lib/python3.9/site-packages/zc/buildout/buildout.py", line 961, in _develop
    zc.buildout.easy_install.develop(setup, dest)
  File "/home/tyctor/projects/punctum.cz/lib/python3.9/site-packages/zc/buildout/easy_install.py", line 1120, in develop
    call_subprocess(args)
  File "/home/tyctor/projects/punctum.cz/lib/python3.9/site-packages/zc/buildout/easy_install.py", line 172, in call_subprocess
    raise Exception(
Exception: Failed to run command:
'/home/tyctor/projects/punctum.cz/bin/python3.9', '/tmp/tmpac98s9w_', '-q', 'develop', '-mN', '-d', '/home/tyctor/projects/punctum.cz/develop-eggs/tmpufy542nabuild'

[icemac]

Currently buildout only supports packages which have a setup.py.