Hi cupy team,

As you probably know, einops supports cupy starting from day 1.

However, cupy was never checked in CI, because it requires GPU (all other backends can be tested on CPU)
On one hand, I am of high opinion of your codebase and never has issues with it, but I still think it would be nice to have this integration tested.

Starting from next release, you can test cupy with

pip install numpy cupy einops pytest
python -m einops.tests.run_tests numpy cupy

and I suggest having this in cupy's CI.

Another related comment: einops supports array_api and I can add cupy to array_api testing once you release it