+
+ # add unprivileged user for the apt methods
+ adduser --force-badname --system --home /nonexistent \
+ --no-create-home --quiet _apt || true
+
+ # Fixup any mistake in the home directory of the _apt user
+ if dpkg --compare-versions "$2" lt-nl 1.1~exp10~; then
+ usermod --home /nonexistent _apt
+ fi
+
+ # deal with upgrades from experimental
+ if dpkg --compare-versions "$2" 'eq' '1.1~exp3'; then
+ # libapt will setup partial/ at runtime
+ chown -R root:root /var/lib/apt/lists /var/cache/apt/archives || true
+ fi