$ cat test.py 
import torch

mps_device = torch.device('mps:0')
x = torch.ones(1, device=mps_device)
x.__dlpack_device__()
$ python test.py 
Traceback (most recent call last):
  File "/Users/zampins/Devel/petscml/test.py", line 5, in <module>
    x.__dlpack_device__()
  File "XXX/lib/python3.12/site-packages/torch/_tensor.py", line 1778, in __dlpack_device__
    raise ValueError(f"Unknown device type {torch_device_type} for Dlpack")
ValueError: Unknown device type mps for Dlpack

$ python -c 'import torch; print(torch.__version__, torch.version.git_version)'
2.7.0 134179474539648ba7dee1317959529fbd0e7f89