setup.py crashes if bare_metal_version is unassigned because CUDA_HOME is None

[prescod]

causal-conv1d/setup.py

Line 112 in acf67c4

if bare_metal_version >= Version("11.8"):

This line crashes if bare_metal_version is unassigned.

bare_metal_version is unassigned if CUDA_HOME is None.

causal-conv1d/setup.py

Lines 100 to 101 in acf67c4

	if CUDA_HOME is not None:
	_, bare_metal_version = get_cuda_bare_metal_version(CUDA_HOME)

Since this package may be a dependency of other packages (like Mamba-Chat), it might be good to give a clear error message that it is failing due to lack of CUDA availability. I didn't know when I installed Mamba-Chat that it would only work on Nvidia.

[not-lain]

same for me (i'm on windows)

causal-conv1d/setup.py

Line 60 in 3db8bef

[cuda_dir + "/bin/nvcc", "-V"], universal_newlines=True