Ensmallen install fails with poetry but not with pip

[caufieldjh]

Attempting to install ensmallen=0.8.36, including through grape, with poetry raises this error:

  RuntimeError

  Unable to find installation candidates for ensmallen (0.8.36)

  at ~/.local/venv/lib/python3.10/site-packages/poetry/installation/chooser.py:105 in choose_for
      101│ 
      102│             links.append(link)
      103│ 
      104│         if not links:
    → 105│             raise RuntimeError(f"Unable to find installation candidates for {package}")
      106│ 
      107│         # Get the best link
      108│         chosen = max(links, key=lambda link: self._sort_key(package, link))
      109│ 

A pip install completes without complaint.

Any relation to #192 ?