Busybox rpm scriplets - embed

Question

I am packaging with rpm for embedded device with busybox instead normal GNU system.
When I install with busybox, it install module, but do not even try to run scriplets.
On regular system, It runs them and fails(ofc, another version of kernel).
Question: Where am I wrong, and how to work around it?
Here is my spec-file:
# The kernel version you are building for
%define kernel 3.4.0-rc6-01292-g9b8149d
# The name of the module you are supplying
%define modname ktgrabber
# The path to the module, after it is installed
%define modpath /lib/modules/%{kernel}/kernel/net/ipv4
# Which revision are we on
%define pkgrelease 1.SL
# Is this a new module, or are we replacing an existing module
# 1 - new module
# 0 - replacing an existing module
%define newmodule 1
# Optional - what Architecture we are building for
#%define thisarch ia32e
Name: kernel-module-%{modname}-%{kernel}
Summary: Kernel Module %{modname} for the %{kernel} kernel
Version: 0.99
Release: 1
Epoch: 0
License: GPLv2+
Packager: Troy Dawson <dawson#fnal.gov>
Group: System Environment/Kernel
BuildRoot: %{_tmppath}/%{name}-%{version}-root
#Requires: /boot/vmlinux-%{kernel}, modutils
Provides: kernel-module-%{modname} = %{epoch}:%{version}
Source0: %{modname}.ko.%{kernel}
%description
This package provides a %{modname} kernel module for
kernel %{kernel}.
%install
mkdir -p $RPM_BUILD_ROOT/%{modpath}
%if %{newmodule}
install -m 644 %{SOURCE0} $RPM_BUILD_ROOT/%{modpath}/%{modname}.ko
%else
install -m 644 %{SOURCE0} $RPM_BUILD_ROOT/%{modpath}/%{modname}.%{version}.%{pkgrelease}.o
%endif
%pre
touch /root/bar
mkdir /alice
%post
touch /bar
/bin/echo %{modname} >> /etc/modules
depmod
mkdir /foo
depmod -ae %{kernel} >/dev/null 2>&1
modprobe %{modname}
%postun
sed -i 's/^%{modname}$//g' /etc/modules
%if %{newmodule}
depmod -ae %{kernel} >/dev/null 2>&1 || :
%else
if [ "" = "0" ] ; then
if ! [ -f %{modpath}/%{modname}.original.o ] ; then
mv %{modpath}/%{modname}.o %{modpath}/%{modname}.original.o
fi
cp -f %{modpath}/%{modname}.%{version}.%{pkgrelease}.o %{modpath}/%{modname}.o
depmod -ae %{kernel} >/dev/null 2>&1 || :
fi
%endif
%files
%if %{newmodule}
%{modpath}/%{modname}.ko
%else
%{modpath}/%{modname}.%{version}.%{pkgrelease}.ko
%endif

Answer 1

Check out this link : http://lists.busybox.net/pipermail/busybox/2006-November/059507.html scriptlets aren't run by busybox's rpm command.
Looking at the source at http://git.busybox.net/busybox/tree/archival/rpm.c#n149 that appears to be true.