Switch from aptitude to apt-get as package manager in package list So far we used "PACKAGES aptitude" to use aptitude as package manager. FAI's install_packages supports different commands (package managers) though, see `install_packages -H`: % install_packages -H | grep -e '^\s*aptitude ' -e '^\s*install ' aptitude aptitude -R -y -o Dpkg::Options::=--force-confdef -o Dpkg::Options::=--force-confnew install install apt-get -y -o Dpkg::Options::=--force-confdef -o Dpkg::Options::=--force-confnew --fix-missing install FAI versions until 5.3** support ignoring packages via: | PACKAGES install | | packagename- We can use that feature in the IGNORE class to avoid e.g. the installation of the partimage package which is currently unavailable in Debian/testing and therefore would fail the build (because of aptitude's #835372 behavior change). ** NOTE: FAI v5.3 is broken regarding this behavior, so we've to use FAI 4.3.1+deb8u1 from jessie to use that feature (at least until it's restored/fixed again).