This reverts commit e82c325bff.
This package update breaks the `update-grub.pl` script:
updating GRUB 2 menu...
Btrfs did not return a path for the subvolume at /
error: unable to activate new configuration
This backwards-incompatible change is the culprit:
$ /nix/store/np25r3yzv2r41ji7v73j110inpj8lhn2-btrfs-progs-4.8.2/bin/btrfs subvol show /
/ is toplevel subvolume
vs.
$ /nix/store/h53vs13nqvjwahpl26a4s7ygqk9xw1mw-btrfs-progs-4.8.3/bin/btrfs subvol show /
/
Name: <FS_TREE>
UUID: -
Parent UUID: -
Received UUID: -
Creation time: -
Subvolume ID: 5
Generation: 6004631
Gen at creation: 0
Parent ID: 0
Top level ID: 0
Flags: -
Snapshot(s):
Bugfixes:
- chunk recovery: fix floating point exception
- chunk recovery: endianity bugfix during rebuild
- mkfs with 64K pages and nodesize reported superblock checksum mismatch
- check: properly reset nlink of multi-linked file
Too many changes to list here. See:
https://btrfs.wiki.kernel.org/index.php/Changelog#By_version_.28btrfs-progs.29
