Import of ensmallen fails due to missing imports

[caufieldjh]

Some (or all?) dependencies aren't getting installed by pip.

Example:
The cpuinfo module may not get installed by pip, but it's imported in the __init__.py.
On a fresh pip install (from grape) and venv:

>>> from ensmallen import Graph
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/harry/test85812/lib/python3.8/site-packages/ensmallen/__init__.py", line 8, in <module>
    import cpuinfo
ModuleNotFoundError: No module named 'cpuinfo'

I see py-cpuinfo is in the Cargo.toml, and if I install it with pip then this solves the problem, but...
then I get a ModuleNotFoundError for bioregistry.
Same for downloaders.

Ensmallen is 0.8.35.

[LucaCappelletti94]

We have just updated the build using the newer maturin version, possibly it has some issues. I will look into it.

[LucaCappelletti94]

The issue continues to be present ensmallen-wise. I have patched it by adding the requirements to grape.