For some reason /dev/disk/by-label/pmOS_root symlink is not present and
blkid from busybox doesn't support the -L parameter. We could install
blkid from util-linux but I prefered to use shell commands instead
Pull request, that got merged:
https://github.com/alpinelinux/aports/pull/1092
Please note, that you can't directly upgrade from postmarketOS "busybox-extras" to the upstreamed version.
To upgrade properly, do the following:
* delete your self-compiled busybox* packages:
`sudo rm ~/.local/var/pmbootstrap/packages/armhf/busybox*`
* zap all your armhf chroots with:
`./pmbootstrap.py zap`
