Make sure bitsandbytes handles permission errors in the right order

[fozziethebeat]

When trying to run bitsandbytes on GCP, I ran into an unexpected permission error during cuda driver lookup

  File "/opt/conda/envs/cubrio-trainer/lib/python3.9/site-packages/bitsandbytes/cuda_setup/main.py", line 201, in remove_non_existent_dirs
    raise exc
  File "/opt/conda/envs/cubrio-trainer/lib/python3.9/site-packages/bitsandbytes/cuda_setup/main.py", line 197, in remove_non_existent_dirs
    if path.exists():
  File "/opt/conda/envs/cubrio-trainer/lib/python3.9/pathlib.py", line 1424, in exists
    self.stat()
  File "/opt/conda/envs/cubrio-trainer/lib/python3.9/pathlib.py", line 1232, in stat
    return self._accessor.stat(self)
PermissionError: [Errno 13] Permission denied: '/root/google_vm_config.lock'

I looked at the code and everything appeared correct until I discovered that PermissionError is a sub-type of OSError and thus the first except clause would catch any permission errors. This fixes that by swapping the except clauses.

[RemiLacroix-IDRIS]

I just ran into this, I was about to open the same PR. I can confirm that @fozziethebeat's fix is correct.

[limjiayi]

I can also confirm that this is the right fix, can this be merged soon?

[xaptronic]

Hmm - this is my fix for the same problem: #715

Could ignoring permission errors mask legit errors?

[fozziethebeat]

I've only had this problem on Google VMs, so your fix looks just as good to me. I figured since the code is already written this way, ordering it to work as intended should be fine.

[RemiLacroix-IDRIS]

Could ignoring permission errors mask legit errors?

I doubt it, the goal of that function is to remove paths that cannot be used to find the CUDA libs anyway.

[madhavthaker1]

I'm also running into the same error in my google VM. Are there plans to merge this fix?

[fozziethebeat]

As far as I can tell, this repo has been frozen since early August. looks like this won't be getting merged anytime soon.

[asaiacai]

This also fixes my issue on GCP. Will this be merged soon?

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. If you think this still needs to be addressed please comment on this thread.

[RemiLacroix-IDRIS]

This definitely needs to be addressed.

[TimDettmers]

Sorry for the delay on this and thank you for your contribution!