The bindings of the environment variables DPKGMAINTSCRIPT* should be passed to the symbolic execution engine as far as they can be known. In particular we need
DPKG_MAINTSCRIPT_NAME (which can preinst,postints,prerm,postrm)
DPKG_MAINTSCRIPT_PACKAGE (the name of the package "owning" the script)
The bindings of the environment variables DPKGMAINTSCRIPT* should be passed to the symbolic execution engine as far as they can be known. In particular we need
see dpkg(1) for a complete list