ok, so removed 3.8, now has 3.12

pip install glasgow/software[builtin-toolchain]
Defaulting to user installation because normal site-packages is not writeable
Processing c:\users\mikek\appdata\local\git\glasgow\software
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... error
  error: subprocess-exited-with-error

  × Preparing metadata (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [25 lines of output]
      Traceback (most recent call last):
        File "C:\Program Files\Python312\Lib\site-packages\pip\_vendor\pyproject_hooks\_in_process\_in_process.py", line 353, in <module>
          main()
        File "C:\Program Files\Python312\Lib\site-packages\pip\_vendor\pyproject_hooks\_in_process\_in_process.py", line 335, in main
          json_out['return_val'] = hook(**hook_input['kwargs'])
                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "C:\Users\mikek\AppData\Local\Temp\pip-build-env-3a0002v1\overlay\Lib\site-packages\pdm\backend\hooks\version\__init__.py", line 101, in resolve_version_from_scm
          raise ConfigError(
      pdm.backend.exceptions.ConfigError: Cannot find the version from SCM or SCM isn't detected.
      You can still specify the version via environment variable `PDM_BUILD_SCM_VERSION`, or specify `fallback_version` config.
      [end of output]

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

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.