pbuilder

These are the steps I use to set up my pbuilder environment. Edit /etc/pbuilderrc :

MIRRORSITE="http://ftp.at.debian.org/debian"
OTHERMIRROR="deb file:/var/cache/pbuilder/result/ ./"
BINDMOUNTS="/var/cache/pbuilder/result/"

Create the directory that will contain the built packages:

sudo mkdir /var/cache/pbuilder/result

Create the pbduiler chroot:

sudo pbuilder --create --distribution sid

Build a package:

sudo pbuilder --build foo.dsc

Update the Packages.gz:

dpkg-scanpackages . /dev/null | gzip -9 > Packages.gz
echo "Running pbuilder update..."
su -c "pbuilder --update --basetgz /var/cache/pbuilder/base.tgz"