icas graphics dependencies
==========================

The icas program is included in the xcas package even though it is primarily a
non-GUI console interface, because it sometimes calls functions from xcas.

See debian/patches/no-X-deps-icas.patch for a way to make it completely
non-dependent on X. There is also a --disable-gui option in ./configure which
accomplishes the same effect as well as disabling xcas entirely. However
upstream does not support a way to build a non-GUI icas and xcas at the same
time, and it is unclear whether we should spend effort maintaining such a patch
or add extra complexity to d/rules to run the build twice with different
./configure arguments. For now, I have given up this attempt but the patch is
included (just not applied) in case anyone wants to pick it up in the future.

DFSG source repacking
=====================

We excluded a bunch of stuff in the original upstream source tarball from the
Debian "orig" source tarball. The list of excluded files and reasons for their
exclusion are briefly documented in debian/copyright.
