The stringcase package can no longer be installed with setuptools version >=78.

[T4rk1n]

          The [https://pypi.org/project/stringcase/](stringcase) package, that is hard dependacy of Dash since this PR can no longer be installed using setuptools >=78, because of the following PR [https://github.com/pypa/setuptools/pull/4870](#4870). As a result, Dash can no longer be installed with setuptools version >=78.

Originally posted by @ivan-mingolov-blue-technologies in #3220 (comment)

[T4rk1n]

Should just remove "stringcase" and handle PascalCase in the codebase.

[ndrezn]

Plotly's Enterprise libraries are experiencing this in CI.

[ndrezn]

Setuptools diff causing this: pypa/setuptools#4870

A traceback might look like:

      setuptools.errors.InvalidConfigError: Invalid dash-separated key 'description-file' in 'metadata' (setup.cfg), please use the underscore name 'description_file' instead.
      [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.