Package does not build with `--use-pep517` (with Poetry)

[boennecd]

The package does not build with pip using --use-pep517 with poetry. This is mainly an issue as the flag cannot be disabled with poetry (see python-poetry/poetry#3433).

A reproducible example is given below:

mkdir tmp
cd tmp
poetry init 
# click through steps...
poetry add glmnet
> Using version ^2.2.1 for glmnet
> 
> Updating dependencies
> Resolving dependencies... (0.1s)
> 
> Writing lock file
> 
> Package operations: 6 installs, 0 updates, 0 removals
> 
>   • Installing numpy (1.23.3)
>   • Installing joblib (1.2.0)
>   • Installing scipy (1.9.2)
>   • Installing threadpoolctl (3.1.0)
>   • Installing scikit-learn (1.1.2)
>   • Installing glmnet (2.2.1): Failed
> 
>   CalledProcessError
> 
>  ...
> 
>    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 'error'
>    error: subprocess-exited-with-error
>    
>    × Getting requirements to build wheel did not run successfully.
>    │ exit code: 1
>    ╰─> [2 lines of output]
>        install requires: 'numpy'. use pip or easy_install.
>          $ pip install numpy
>        [end of output]

The error comes from the beginning of the setup.py file:

python-glmnet/setup.py

Lines 12 to 18 in 813c06f

	import setuptools # noqa: F401
	try:
	from numpy.distutils.core import Extension, setup
	except ImportError:
	sys.exit("install requires: 'numpy'."
	" use pip or easy_install."
	" \n $ pip install numpy")

which seems to use this SO answer to compile the FORTRAN code from the original R package: https://stackoverflow.com/a/55358607/5861244

A solution in the short term is to call

poetry run python -m pip install glmnet --no-use-pep517
poetry add glmnet 

as mentioned here: python-poetry/poetry#3433 (comment)

Versions for completness:

poetry run python --version
> Python 3.10.7
poetry --version
> Poetry (version 1.2.0)