On debian squeeze, I am trying to do the following :

• fetch sources package from the wheezy source repository
• bootstrap a squeeze chroot for several architectures
• build the packages for several architectures (i386, amd64 + all and any)

I want both the fetching, bootstrapping and build operation to be scriptable, repeatable, and run as a normal user. For the environment setup, I want to make as little use of the root account as possible (install the necessary dependencies, and maybe some visudo stuff). If possible I would like to avoid using a VM (pbuilder with user mode linux)

So far I have tried several things with pbuilder (require root), debootstrap (require root) with little success.

Here is an example script of what I want to do (does not work):

#/bin/bash

set -e
set -x

this=`readlink -f $0`
this_dir=`dirname $this`

archs='i386 amd64 any all'
pushd $this_dir/src
# I actually want the following line to work with a repo that 
# is not in /etc/apt/sources.list but that is another question
apt-get source cyrus-imapd-2.4
popd

for arch in $archs
do
  build_dir=$this_dir/build/$arch/
  pbuilder --create --configfile $build_dir/pbuilderrc --buildresult $build_dir/
  pbuilder --build --configfile $build_dir/pbuilderrc --buildresult \ 
    $build_dir/ $this_dir/src/*.dsc

  # of course I want to use the .dput.cf in /home/myuser/ 
  # and not in /root/

  dput $build_dir/$arch/*.changes
done