Pipeline requirements.txt no longer builds in some environments

[kltm]

Recently (maybe around Monday), the requirements.txt file that's used with go-site in association with the pipeline/ directory and scripts there, stopped building in some environments (so far: the main data pipeline and GitHub actions), with the error:

Requirement already satisfied: requests>=0.0 in /usr/local/lib/python3.10/dist-packages (from ontobio==2.9.12->-r pipeline/requirements.txt (line 2)) (2.31.0)
Collecting pysolr>=3.6.0
  Downloading pysolr-3.10.0.tar.gz (59 kB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 59.1/59.1 KB 263.8 MB/s eta 0:00:00
  Installing build dependencies: started
  Installing build dependencies: finished with status 'done'
  Getting requirements to build wheel: started
  Getting requirements to build wheel: finished with status 'done'
  Installing backend dependencies: started
  Installing backend dependencies: finished with status 'done'
  Preparing metadata (pyproject.toml): started
  Preparing metadata (pyproject.toml): finished with status 'error'
  error: subprocess-exited-with-error
  
  × Preparing metadata (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [34 lines of output]
      Traceback (most recent call last):
        File "/usr/lib/python3/dist-packages/pip/_vendor/pep517/in_process/_in_process.py", line 363, in <module>
          main()
        File "/usr/lib/python3/dist-packages/pip/_vendor/pep517/in_process/_in_process.py", line 345, in main
          json_out['return_val'] = hook(**hook_input['kwargs'])
        File "/usr/lib/python3/dist-packages/pip/_vendor/pep517/in_process/_in_process.py", line 164, in prepare_metadata_for_build_wheel
.
.
.
         File "/usr/lib/python3/dist-packages/setuptools/dist.py", line 835, in <lambda>
          loaded = map(lambda e: e.load(), filtered)
        File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2464, in load
          self.require(*args, **kwargs)
        File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2487, in require
          items = working_set.resolve(reqs, env, installer, extras=self.extras)
        File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 782, in resolve
          raise VersionConflict(dist, req).with_context(dependent_req)
      pkg_resources.VersionConflict: (setuptools 59.6.0 (/usr/lib/python3/dist-packages), Requirement.parse('setuptools>=61'))
      [end of output]

this can be seen in-place at https://github.com/geneontology/go-site/actions/runs/13561370400/job/37904968643

As this is associated with pysolr(!) apparently, I'm wondering if a soft/sliding requirement in ontobio is eventually leading to the error with setuptools.