Possible License conflict (?) with setuptools during build on 2.2.8

[dschmide]

Version 2.2.8 of mysqlclient seems to have a bug in its packaging configuration file (pyproject.toml) that causes it to fail when building on our system

this is the error log we get during the build process

  configuration error: `project.license` must be valid exactly by one definition (2 matches found):
  
      - keys:
          'file': {type: string}
        required: ['file']
      - keys:
          'text': {type: string}
        required: ['text']

  ...
  
  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"
                  ]

  ...
  
  × Encountered error while generating package metadata.
  ╰─> mysqlclient

I am unfamiliar with this error, but downgrading to version 2.2.7 fixed the issue. I am wondering what caused this, or if it it something that happened only on our system. Anyone else getting this?
We are using python 3.11 which seems to be fine according to the requirements: Requires: Python >=3.10

added seed packages: pip==23.0.1, setuptools==66.1.1, wheel==0.38.4

[dschmide]

maybe this is related?

11752de
#772

is it possible that the version of setuptools caused this?

Please use a simple string containing a SPDX expression for project.license. You can also use project.license-files. (Both options available on setuptools>=77.0.0).