The ‘u’ in udeb stands for Greek mu, meaning micro (udebs take less space
than regular debian packages).
Unlike regular debian packages, modules for the installer will not be
policy compliant. They will not contain documentation in /usr/share/doc.
They need not comply with the FHS. They may be statically linked. They are
built with options such as -Os and -fomit-frame-pointer to reduce binary
size. They may conflict with essential “real” debian packages, and thus be
non-installable on a real debian system, although it is recommended that if
possible, this be avoided.
