Osxfuse: Issues on Big Sur Beta 9: "Missing extension with identifier com.github.osxfuse.filesystems.osxfusefs"

[pat-s]

When upgrading via brew I see

==> Purging files for version 3.11.2 of Cask osxfuse
Error: osxfuse: Failure while executing; `/usr/bin/sudo -E -- /sbin/kextunload -b com.github.osxfuse.filesystems.osxfusefs` exited with 3. Here's the output:
Executing: /usr/bin/kmutil unload -b com.github.osxfuse.filesystems.osxfusefs
Error occurred unloading extensions: Missing extension with identifier com.github.osxfuse.filesystems.osxfusefs

I've run /Library/Filesystems/osxfuse.fs/Contents/Resources/load_osxfuse; echo $? as suggested in #705 which returned 0 and also allowed the app in the system extension panel (including a reboot).

[bfleischer]

Please report this issue to the Homebrew team. The identifier com.github.osxfuse.filesystems.osxfusefs is not correct. It needs to be com.github.osxfuse.filesystems.osxfuse. And it should not be necessary for Homebrew to unload the FUSE kernel extension. The FUSE installer already does this.

[pat-s]

Could it be that the macOS internal identifier changed somehow between Catalina and BigSur? I see that the correct one exists in the homebrew formula and guessing that something happens behind scenes.
Hence I am not sure what if there is anything that can be done on brew's side.

It fails when purging the old install - maybe it works if I trigger a manual uninstall and a fresh install again?

[bfleischer]

The kextunload command (with the wrong bundle identifier) is called by Homebrew. This is not done by macOS or FUSE.

The cask contains the wrong identifier: https://github.com/Homebrew/homebrew-cask/blob/master/Casks/osxfuse.rb

[pat-s]

Ah!

I changed it locally and wondered because the install still failed. I got confused because the diff is only the fs at the end.

Somehow the old identifier is still used for purging even when the formula is updated.

The following worked

rm -rf /usr/local/Caskroom/osxfuse
brew install osxfuse