Error during installation or during grub menu creation

[quizilkend]

Hi!

I'm experiencing issues with grub-btrfs and am not able to troubleshoot them by myself. I filed an issue because the README says so, if this should rather be a discussion I can close the issue.

1. install
   I tried to install and get:

Installing manpages...
Installing systemd .service file
Installing docs...
Updating the GRUB menu...
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-6.12.74+deb13+1-amd64
Found initrd image: /boot/initrd.img-6.12.74+deb13+1-amd64
Found linux image: /boot/vmlinuz-6.12.73+deb13-amd64
Found initrd image: /boot/initrd.img-6.12.73+deb13-amd64
Warning: os-prober will not be executed to detect other bootable partitions.
Systems on them will not be added to the GRUB boot configuration.
Check GRUB_DISABLE_OS_PROBER documentation entry.
Adding boot menu entry for UEFI Firmware Settings ...
Detecting snapshots ...
make: *** [Makefile:55: install] Fehler 2

2. The files are in place and it seems snapshots are found as well:

sudo /usr/bin/grub-btrfsd -v /.snapshots
Arguments:
Snapshot directories: /.snapshots
Timestift autodetection: false
Timeshift old: false
Logfile: 0
Recursive: false
grub-btrfsd starting up...
starting daemon watching /.snapshots...
Subdaemon function started, PID: 1952
1952: Entering infinite while for /.snapshots
1952: Snapshot dir watchtimeout: 0
1952: Watching /.snapshots for new snapshots...
Setting up watches.
Watches established.
/.snapshots/ CREATE,ISDIR 17
1952: Detected snapshot creation/ deletion, recreating Grub menu
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-6.12.74+deb13+1-amd64
Found initrd image: /boot/initrd.img-6.12.74+deb13+1-amd64
Found linux image: /boot/vmlinuz-6.12.73+deb13-amd64
Found initrd image: /boot/initrd.img-6.12.73+deb13-amd64
Warning: os-prober will not be executed to detect other bootable partitions.
Systems on them will not be added to the GRUB boot configuration.
Check GRUB_DISABLE_OS_PROBER documentation entry.
Adding boot menu entry for UEFI Firmware Settings ...
Detecting snapshots ...
[!] Error during grub menu creation (grub/ grub-btrfs error)
1952: Watching /.snapshots for new snapshots...
Setting up watches.
Watches established.

3. My setup

• GRUB_BTRFS_VERSION=4.13-yabsnap_info_support-2024-03-06T13:43:57+00:00
• subvolume for snapshots on @snapshots, this subvolume is mounted to /.snapshots
• debian trixie with snapper
• /boot on btrfs with raid1 and everything else on btrfs fs with raid1

Thank you very much for your help!
If I can provide any more information I'm more than glad to do so!
Samuel