Tests failing due to numpy import error

[jcannon-gplates]

When I run the test pytestcases\test_5_seafloorgrid.py I get ImportError: numpy.core.multiarray failed to import in stripy in from . import _stripack in "spherical.py".

I'm using a pip venv with Python 3.12, stripy 2.3.3, numpy 2.2.0, pygplates 1.0.0rc1. And I'm on Windows 11.

It might be due to NumPy 2. Maybe stripy needs to be compiled against NumPy 2 in order to support both 1.x and 2.x. Or specify numpy<2.0 in its pyproject.toml/setup.py.

There's mention of stripy supporting Python 3.13 here, so maybe NumPy 2 is not the problem, though maybe that comment was meant for conda (and not pip).

By the way, I'm updating to pygplates>=1.0.0rc1 in #303, for which pyGPlates now supports NumPy 2.x (and 1.x).

So we may want to check our dependencies all support NumPy 2.x, otherwise I guess we'll need to specify numpy<2.0 for gplately 2.0 (if we're still encountering problems).

This is probably a question for @brmather

[jcannon-gplates]

I can confirm that manually downgrading NumPy from 2.2.0 to 1.26.4 with pip install numpy==1.26.4 works around this issue.

[jcannon-gplates]

I think we'll need to specify numpy<2.0 (in "pyproject.toml" and "setup.py") until all dependencies are compiled to support NumPy 2.x (see here).

[michaelchin]

I think we'll need to specify numpy<2.0 (in "pyproject.toml" and "setup.py") until all dependencies are compiled to support NumPy 2.x (see here).

Yes, please. Thank you.