Dear Maintainer,

I've tried to install overlayroot on minimal system (created with
debootstrap --variant minbase). The postinst hook - rebuilding the
initrd.img - failed due to /usr/share/initramfs-tools/hooks/overlayroot
not finding the /sbin/mke2fs binary. Installing e2fsprogs manually fixes
the problem. If it's an unwanted behavior, please consider adding
e2fsprogs to deps of overlayroot package.

Regards,
Michal