Bug#601324: initramfs-tools: PREREQ only honored inside single directory
at least for hook scripts, PREREQ is only honored in /etc/initramfs-tools resp
/usr/share/initramfs-tools. First all scripts in
/usr/share/initramfs-tools are ordered according to their PREREQ
values and executed, then all scripts in /etc/initramfs-tools are
ordered according to _their_ PREREQ values and executed.
There is no possibility to have a local script executed before one
from the package.
This is at least surprising.