[Errno 2] No such file or directory

[coccoinomane]

Hi @matangover and thank you for this great extension... it really makes my work easier :-)
I would like to report a weird issue: since yesterday I started seeing this error everytime I modify a Python file in my workspace, with or without a mypy file: [Errno 2] No such file or directory.
Here is a screenshot of the error and of the "Output" tab.
Thank you!
Guido

[matangover]

Hi @coccoinomane, I'm happy you like the extension. Let me try to see why it's failing this way...

1. Did you recently upgrade or re-install mypy or Python?
2. Does this error happen with any workspace or just with this specific one?
3. Do you have Python installed at /usr/local/bin/python3?
4. Can you check the log file, which is the one following the --log-file argument in the Output panel?

[coccoinomane]

Hi there @matangover , and thank you for your reply!
Here you go:

1. Yes! This is my first project with mypy, I am on version dmypy 0.931. I have removed & re-installed mypy to no effect.
2. I get the same error even on a workspace with just an empty test.py file.
3. Yep, my python is in /usr/local/bin/python3 and is version 3.9.9
4. The log file exists and is empty, with permissions -rw-r--r--. Changing them to 777 does not fix the problem.

Let me add that the .json file exists too and has the following content:

{"pid": 1788, "connection_name": "/var/folders/dx/t_4v7kfd1pb_fy5lmq1s60gc0000gp/T/tmp4zvqbzam/dmypy.sock"}

The dmypy.sock file does not exist though, maybe this is the problem?

Cheers,
Guido

[coccoinomane]

As a follow up, I can confirm that the problem is the non-existing socket file.
If I create an emtpy dmypy.sock file where the editor expects it, I get a different error:

Error running mypy in /Users/coccoinomane/code/web3/crabada: mypy failed with error: "[Errno 38] Socket operation on non-socket". See Output panel for details.

[matangover]

Thanks for the details. I will try to reproduce the problem

[RayBB]

I am also seeing this issue but can't pin down any specific cause. When I clone the (private) repo to a different new folder it doesn't happen anymore.

I checked diff -qr ~/api api | grep -v .git and removed everything that was different except secrets files and no luck.

Edit: I moved the folder that was having the issue elsewhere, copied the folder that had pretty much no diff. Now all of a sudden it's working. I can only guess it had to do with something in .git or some other temp file.

[woopla]

Another user with the issue here. When I look at the output pane for details, all the files in the command line exist. This started happening maybe a couple of weeks ago?

[matangover]

Thanks for reporting everyone, I'll try to reproduce it. What mypy versions are you using? I have a feeling it might be related to dangling daemon processes that are not properly closed in some occasions.

[woopla]

@matangover I have:

> dmypy --version
dmypy 0.812

And I think you're on the right track: I closed all my VSCode windows, killed all the dmypy processes on the host, restarted VSCode and I'm not getting complaints anymore \o/

[felixmeziere]

We have the same issue! :(

[matangover]

I've released a new version which fixes the bug. If for any reason you still encounter this error please enable the mypy.debugLogging option and attach the log.

[RayBB]

For anyone who is still getting crashes. Upgrading to the latest version of mypy 0.910 -> 0.931 seemed to fix this (or a similar) issue for me.