There is a new pull request by slymattz against master on the void-packages repository

https://github.com/slymattz/void-packages refind
https://github.com/void-linux/void-packages/pull/48906

refind: account for btrfs setups when generating manual stanzas
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#### Testing the changes
- I tested the changes in this PR: **briefly**

#### My setup
/etc/default/refind-kernel-hook.conf
```
#!/bin/sh

# Change this line to 1 to update refind conf whenever new kernel is installed
UPDATE_REFIND_CONF=1

# refind.conf location
# It usually stays in
#
# /boot/EFI/refind/refind.conf
#       if you use all default configuration and EFI partition mounted to /boot
# /boot/efi/EFI/refind/refind.conf
#       if using default configuration and EFI partition mounted to /boot/efi
# /boot/EFI/BOOT/refind.conf
#       if you run refind-install --usedefault and EFI partition mounted to /boot
# /boot/efi/EFI/BOOT/refind.conf
#       likewise, EFI mounted to /boot/efi
# /efi/EFI/refind/refind.conf
# /efi/EFI/BOOT/refind.conf
REFIND_CONF=/boot/efi/EFI/refind/refind.conf

# addition kernel cmdline
OPTIONS="root=UUID=a9ee6e45-d348-4214-9560-0d0c73ab8077 ro rootflags=subvol=void/ROOT quiet loglevel=4 mem_sleep_default=deep i915.modeset=1 video=1920x1080"
```
/boot/efi/EFI/refind/refind.conf
```
timeout 5
use_nvram false
scanfor internal,optical,manual
also_scan_dirs void/ROOT/boot
dont_scan_volumes FIRE1TB-EFI,FIRE1TB-tank,KC1TB-EFI,KC2TB-EFI,KC2TB-tank,WD1TB-EFI,WD1TB-tank
resolution 1920 1080
```
scanfor internal works as it takes also_scan_dirs as a prefix to where to find vmlinux and initramfs files.

However, manual stanzas generated by /etc/kernel.d/post-install/50-refind hook get me nowhere near bootable entries.

The patch that I came up with may not be perfect but it works on my installation.

Further testing is needed, especially for people with EFI mounted at /boot and using filesystems other than btrfs. 

To test the changes one needs to run xbps-reconfigure -f linux6.6 or whichever kernel one's running.


A patch file from https://github.com/void-linux/void-packages/pull/48906.patch is attached