Does not install

[Luthaf]

It looks like the new pyproject.toml is wrong:

$ pip install git+https://github.com/serfg/sparse_accumulation
Collecting git+https://github.com/serfg/sparse_accumulation
  Cloning https://github.com/serfg/sparse_accumulation to /private/var/folders/nz/mgmqnhrj4mzfjlnqbgn02t780000gn/T/pip-req-build-usiiqsy_
  Running command git clone --filter=blob:none --quiet https://github.com/serfg/sparse_accumulation /private/var/folders/nz/mgmqnhrj4mzfjlnqbgn02t780000gn/T/pip-req-build-usiiqsy_
  Resolved https://github.com/serfg/sparse_accumulation to commit e60242681ac5796e49d0ce29a6e7026be04e8304
  Installing build dependencies ... done
  Getting requirements to build wheel ... error
  error: subprocess-exited-with-error

  × Getting requirements to build wheel did not run successfully.
  │ exit code: 1
  ╰─> [97 lines of output]
      /private/var/folders/nz/mgmqnhrj4mzfjlnqbgn02t780000gn/T/pip-build-env-pttwzihh/overlay/lib/python3.11/site-packages/setuptools/config/pyprojecttoml.py:66: _BetaConfiguration: Support for `[tool.setuptools]` in `pyproject.toml` is still *beta*.
        config = read_configuration(filepath, True, ignore_option_errors, dist)
      configuration error: `project.license` must be valid exactly by one definition (0 matches found):

          - keys:
              'file': {type: string}
            required: ['file']
          - keys:
              'text': {type: string}
            required: ['text']

      DESCRIPTION:
          `Project license <https://peps.python.org/pep-0621/#license>`_.

      GIVEN VALUE:
          {}

      OFFENDING RULE: 'oneOf'

      DEFINITION:
          {
              "oneOf": [
                  {
                      "properties": {
                          "file": {
                              "type": "string",
                              "$$description": [
                                  "Relative path to the file (UTF-8) which contains the license for the",
                                  "project."
                              ]
                          }
                      },
                      "required": [
                          "file"
                      ]
                  },
                  {
                      "properties": {
                          "text": {
                              "type": "string",
                              "$$description": [
                                  "The license of the project whose meaning is that of the",
                                  "`License field from the core metadata",
                                  "<https://packaging.python.org/specifications/core-metadata/#license>`_."
                              ]
                          }
                      },
                      "required": [
                          "text"
                      ]
                  }
              ]
          }
      Traceback (most recent call last):
        File "/Users/guillaume/code/tests/LE-ACE/virtualenv/lib/python3.11/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 353, in <module>
          main()
        File "/Users/guillaume/code/tests/LE-ACE/virtualenv/lib/python3.11/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 335, in main
          json_out['return_val'] = hook(**hook_input['kwargs'])
                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/Users/guillaume/code/tests/LE-ACE/virtualenv/lib/python3.11/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 118, in get_requires_for_build_wheel
          return hook(config_settings)
                 ^^^^^^^^^^^^^^^^^^^^^
        File "/private/var/folders/nz/mgmqnhrj4mzfjlnqbgn02t780000gn/T/pip-build-env-pttwzihh/overlay/lib/python3.11/site-packages/setuptools/build_meta.py", line 341, in get_requires_for_build_wheel
          return self._get_build_requires(config_settings, requirements=['wheel'])
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/private/var/folders/nz/mgmqnhrj4mzfjlnqbgn02t780000gn/T/pip-build-env-pttwzihh/overlay/lib/python3.11/site-packages/setuptools/build_meta.py", line 323, in _get_build_requires
          self.run_setup()
        File "/private/var/folders/nz/mgmqnhrj4mzfjlnqbgn02t780000gn/T/pip-build-env-pttwzihh/overlay/lib/python3.11/site-packages/setuptools/build_meta.py", line 488, in run_setup
          self).run_setup(setup_script=setup_script)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/private/var/folders/nz/mgmqnhrj4mzfjlnqbgn02t780000gn/T/pip-build-env-pttwzihh/overlay/lib/python3.11/site-packages/setuptools/build_meta.py", line 338, in run_setup
          exec(code, locals())
        File "<string>", line 24, in <module>
        File "/private/var/folders/nz/mgmqnhrj4mzfjlnqbgn02t780000gn/T/pip-build-env-pttwzihh/overlay/lib/python3.11/site-packages/setuptools/__init__.py", line 107, in setup
          return distutils.core.setup(**attrs)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/private/var/folders/nz/mgmqnhrj4mzfjlnqbgn02t780000gn/T/pip-build-env-pttwzihh/overlay/lib/python3.11/site-packages/setuptools/_distutils/core.py", line 159, in setup
          dist.parse_config_files()
        File "/private/var/folders/nz/mgmqnhrj4mzfjlnqbgn02t780000gn/T/pip-build-env-pttwzihh/overlay/lib/python3.11/site-packages/setuptools/dist.py", line 908, in parse_config_files
          pyprojecttoml.apply_configuration(self, filename, ignore_option_errors)
        File "/private/var/folders/nz/mgmqnhrj4mzfjlnqbgn02t780000gn/T/pip-build-env-pttwzihh/overlay/lib/python3.11/site-packages/setuptools/config/pyprojecttoml.py", line 66, in apply_configuration
          config = read_configuration(filepath, True, ignore_option_errors, dist)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/private/var/folders/nz/mgmqnhrj4mzfjlnqbgn02t780000gn/T/pip-build-env-pttwzihh/overlay/lib/python3.11/site-packages/setuptools/config/pyprojecttoml.py", line 129, in read_configuration
          validate(subset, filepath)
        File "/private/var/folders/nz/mgmqnhrj4mzfjlnqbgn02t780000gn/T/pip-build-env-pttwzihh/overlay/lib/python3.11/site-packages/setuptools/config/pyprojecttoml.py", line 55, in validate
          raise ValueError(f"{error}\n{summary}") from None
      ValueError: invalid pyproject.toml config: `project.license`.
      configuration error: `project.license` must be valid exactly by one definition (0 matches found):

          - keys:
              'file': {type: string}
            required: ['file']
          - keys:
              'text': {type: string}
            required: ['text']

      [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.

Ping @ylliu610 @frostedoyster

I'm not sure why CI did not pick this up, is CI still using the old setup.py based build system?