invalid `pyproject.toml`

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* **asyncpg version**: irrelevant

* **PostgreSQL version**: irrelevant

* **Do you use a PostgreSQL SaaS?  If so, which?  Can you reproduce the issue with a local PostgreSQL install?**: irrelevant

* **Python version**: `Python 3.10.3 (main, Mar 18 2022, 05:09:31) [GCC 10.2.1 20210110] on linux`

* **Platform**: `Linux ecd864aa501c 5.10.60-sunxi64 #21.08.1 SMP Wed Aug 25 18:29:57 UTC 2021 aarch64 GNU/Linux`

* **Do you use pgbouncer?**: irrelevant

* **Did you install asyncpg with pip?**: yes

* **If you built asyncpg locally, which version of Cython did you use?**: irrelevant

* **Can the issue be reproduced under both asyncio and [uvloop](https://github.com/magicstack/uvloop)?**: irrelevant



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In most cases, it is not really a problem because we have prebuilt wheels. However, this is not true for aarch64 (#870). I'd always built it by myself, but after a recent update of Python (or `setuptools` or some other?), I could never build it successfully.



After some tests, I found this issue occurs on amd64 too.



**According to [PEP 621](https://peps.python.org/pep-0621/#name), `[project]` must contain the `name` of the project.**



<hr>



```sh

sudo docker run --rm -it python:3.10-slim bash

```

```sh

apt-get update && apt-get install -y build-essential git --no-install-recommends

pip install -U pip setuptools

```



Build from PyPI:

```sh

pip install asyncpg --no-binary :all:

```



Or, Build from source:

```sh

pip install git+https://github.com/MagicStack/asyncpg.git@master

```



Output:

```

Collecting git+https://github.com/MagicStack/asyncpg.git@master

Cloning https://github.com/MagicStack/asyncpg.git (to revision master) to /tmp/pip-req-build-1y0lh4k8

Running command git clone --filter=blob:none --quiet https://github.com/MagicStack/asyncpg.git /tmp/pip-req-build-1y0lh4k8

Resolved https://github.com/MagicStack/asyncpg.git to commit a2f093df6aceec7842709eaf92c5ff9df093efae

Running command git submodule update --init --recursive -q

Installing build dependencies ... done

Getting requirements to build wheel ... done

Installing backend dependencies ... done

Preparing metadata (pyproject.toml) ... error

error: subprocess-exited-with-error



× Preparing metadata (pyproject.toml) did not run successfully.

│ exit code: 1

╰─> [515 lines of output]

/tmp/pip-build-env-mutsvdr9/overlay/lib/python3.10/site-packages/setuptools/config/pyprojecttoml.py:100: _ExperimentalProjectMetadata: Support for project metadata in `pyproject.toml` is still experimental and may be removed (or change) in future releases.

warnings.warn(msg, _ExperimentalProjectMetadata)

configuration error: `project` must contain ['name'] properties

DESCRIPTION:

Data structure for the **project** table inside ``pyproject.toml`` (as

initially defined in :pep:`621`)



GIVEN VALUE:

{

"requires-python": ">=3.6"

}



OFFENDING RULE: 'required'



DEFINITION:

...

...

<omitted>

...

...



Traceback (most recent call last):

File "/usr/local/lib/python3.10/site-packages/pip/_vendor/pep517/in_process/_in_process.py",line 363, in <module>

main()

File "/usr/local/lib/python3.10/site-packages/pip/_vendor/pep517/in_process/_in_process.py",line 345, in main

json_out['return_val'] = hook(**hook_input['kwargs'])

File "/usr/local/lib/python3.10/site-packages/pip/_vendor/pep517/in_process/_in_process.py",line 130, in get_requires_for_build_wheel

return hook(config_settings)

File "/tmp/pip-build-env-9b_16u9a/overlay/lib/python3.10/site-packages/setuptools/build_meta.py", line 177, in get_requires_for_build_wheel

return self._get_build_requires(

File "/tmp/pip-build-env-9b_16u9a/overlay/lib/python3.10/site-packages/setuptools/build_meta.py", line 159, in _get_build_requires

self.run_setup()

File "/tmp/pip-build-env-9b_16u9a/overlay/lib/python3.10/site-packages/setuptools/build_meta.py", line 174, in run_setup

exec(compile(code, __file__, 'exec'), locals())

File "setup.py", line 248, in <module>

setuptools.setup(

File "/tmp/pip-build-env-9b_16u9a/overlay/lib/python3.10/site-packages/setuptools/__init__.py", line 77, in setup

return distutils.core.setup(**attrs)

File "/tmp/pip-build-env-9b_16u9a/overlay/lib/python3.10/site-packages/setuptools/_distutils/core.py", line 122, in setup

dist.parse_config_files()

File "/tmp/pip-build-env-9b_16u9a/overlay/lib/python3.10/site-packages/setuptools/dist.py", line 836, in parse_config_files

pyprojecttoml.apply_configuration(self, filename, ignore_option_errors)

File "/tmp/pip-build-env-9b_16u9a/overlay/lib/python3.10/site-packages/setuptools/config/pyprojecttoml.py", line 52, in apply_configuration

config = read_configuration(filepath, True, ignore_option_errors, dist)

File "/tmp/pip-build-env-9b_16u9a/overlay/lib/python3.10/site-packages/setuptools/config/pyprojecttoml.py", line 114, in read_configuration

validate(subset, filepath)

File "/tmp/pip-build-env-9b_16u9a/overlay/lib/python3.10/site-packages/setuptools/config/pyprojecttoml.py", line 43, in validate

raise error from None

ValueError: invalid pyproject.toml config: `project`

[end of output]



note: This error originates from a subprocess, and is likely not a problem with pip.

error: subprocess-exited-with-error



× Getting requirements to build wheel did not run successfully.

│ exit code: 1

╰─> See above for output.



note: This error originates from a subprocess, and is likely not a problem with pip.

hint: See above for details.

```

[]