Demonstration script for Debian bug #786609 http://bugs.debian.org/786609

The script sets up three directories:

• aptroot: a root directory structure with /etc/apt, /var/lib/dpkg and /var/cache/apt to try out apt behaviour independent of the host system
• exprepo: a repository with codename experimental and pin priority 500
• sidrepo: a repository with codename unstable and pin priority 900

Then three calls to apt-get are done:

• installing pkg-a normally
• installing it with -t experimental
• installing it with aspcud as resolver

See the Debian bug for more details.