Beginning with commit 8ffd6af27e,
the build recipe for `hplipWithPlugin` explicitely drops a
udev rule file that is delivered with the sources.
In `hplip` (without plugin), the rule file is retained.
The udev rules takes care of uploading firmware
to certain printers (and maybe of other things),
e.g. to HP LaserJet 1000.
This commit reinstates the rule file and
expands the fixup script so that the rules
are also patched in the WithPlugin version.
hplip's udev rule uses `nohup` to attempt to detach
its printer configuration script from the udev process.
However, this attempt is futile as udev
tracks its child processes with cgroups:
https://unix.stackexchange.com/a/243648
The hardcoded path to `nohup` was patched to use Nix' `nohup`.
This commit alters the patch script so
that it simply drops the call to `nohup`.
