Working with Helix on sshfs filesystem

[littlelevi]

Summary

While working on sshfs, on Save the bug clears the contents of the edited file and sends it back to the server as blank. I don't know what it depends on, but I suspect the size of the file.

Reproduction Steps

I tried this:

This will apply to FreeBSD but I suspect the problem will be on any Unix system.
But just in case. If there was a need for full replication on this platform.

FreeBSD part:

$ kldload fusefs: Add fuse module to the kernel
$ sysctl vfs.usermount=1: Allow user to mount filesystem
$ pkg install fusefs-sshfs: Install fuse-sshfs package

Universal Part:

In my particular case I'm using a tunnel. I don't suspect it would be important, but the more information the better and faster replication.

Here is .ssh/config I'm using. This is relevant because sshfs uses ssh config file

#B
Host tunnelHost
  HostName xxx
  User xxx
  IdentityFile ~/.ssh/xxx
  ForwardAgent yes
  
#C
Host server_www
  HostName xxx
  User xxx
  IdentityFile ~/.ssh/xxx
  ProxyCommand ssh tunnelHost -W %h:%p

Now the mouting is quite strighforwad:

sshfs server_www:/path/to/remote/directory ~/Desktop/current_job/

Now we edit the content. hx ~/Desktop/current_job/style.css and such.

I expected this to happen:

After opening and saving the file, I expect it to be, well... saved and sent back to the server. Exactly as I would work with the local file.

Instead, this happened:

When I do :w appears
"Async job failed: Permission denied (os error 13)"

It is important that there are some changes to the file, otherwise the error will not appear
Then the file goes completely blank, and all the work is lost. And with such empty content it's sent to the server.

I've been working with Vim like this, and it doesn't have that problem. So it must be Helix related issue not some sshfs config one or related to permissions.

Helix log

~/.cache/helix/helix.log

2022-08-20T16:50:28.764 helix_view::editor [ERROR] Failed to initialize the LSP for `source.css` { cannot find binary path }

Platform

FreeBSD 13.1-RELEASE

Terminal Emulator

alacritty 0.10.1

Helix Version

helix 22.05

[littlelevi]

I think I have found the reason. The log was right it's seems to be LSP related issue - css LSP to be precise. I don't know how and why. I imagine the LSP has a problem communicating through sshfs.
A temporary solution looks like this.

• Change all extensions of css files to something different like style.xxx
• Invoke :set-language css it will now color the syntax, but won't produce error on saving.
• On the server I have to manually do mv style.xxx style.css

That is the best I came up with so far.

[littlelevi]

Okay, new Clue.
That was probably all the wrong lead from the beginning.

Error: "Async job failed: Permission denied (os error 13) "

The error occurred while editing LOCAL MAKE file in the FreeBSD ports. When editing file owned by root. I'm a little lost in this already. Attaching last Log line. Because there is still error related to LSP.

2022-08-20T21: 06: 24.232 helix_view :: editor [ERROR] Failed to initialize the LSP for `source.make` {LSP not defined}

Thing that makes me wonder why I found this error just now. The only thing I can think of is that several days ago I upgraded FreeBSD from 13 to 13.1

The last thing that comes to my mind. It is recompile Helix from ports instead of installing from package