How can I install an alternative desktop on an existing Ubuntu install without installing the restricted extras (or any other non-free or known patent-encumbered packages)?
For example, if I install the
xubuntu-desktop package, it installs packages like
gstreamer1.0-libav, which would normally have to be installed from the restricted-extras package instead. I could just install the desktop environment itself (
xfce4 package), but that would leave off all the normal packages that Xubuntu comes with, including desktop themes, etc.