Cannot use mypy configuration in pyproject.toml

[francis-clairicia]

Bug description

The mypy configuration is stored in pyproject.toml

I tried to do the following:

[tool.hatch.build.targets.wheel.hooks.mypyc]
dependencies = ["hatch-mypyc~=0.16.0"]
mypy-args = ["--config-file=pyproject.toml"]

But I ended up with

Exception: Error while invoking Mypyc:
usage: mypy [-h] [-v] [-V] [more options; see below]
            [-m MODULE] [-p PACKAGE] [-c PROGRAM_TEXT] [files ...]
mypy: error: Cannot find config file 'pyproject.toml'

[b0o]

I was running into this issue as well. This seems to be the cause:

hatch-mypyc/hatch_mypyc/plugin.py

Lines 269 to 281 in 95613d5

	@contextmanager
	def hide_project_file(self):
	# TODO: remove this and bump setuptools when it supports PEP 639
	project_file = os.path.join(self.root, 'pyproject.toml')
	project_file_backup = os.path.join(self.root, 'pyproject.toml.bak')
	os.replace(project_file, project_file_backup)
	try:
	yield
	finally:
	os.replace(project_file_backup, project_file)

[ofek]

definitely a bug, can you please check if it supports PEP 639 now?

[b0o]

PEP 639 is still a draft, and I'm not sure if setuptools supports it. There are a few issues mentioning PEP 639, but nothing conclusive, e.g. pypa/setuptools#3596 and pypa/setuptools#4033.