By request of Jochen Sprickerhof <jspricke@debian.org>, I've made an archive rebuild [*]
using a modified sbuild version which does not mount /sys inside the chroot.

We found 41 packages which do not build ok if /sys is not available. Note that
this is not necessarily a bug in the affected packages, but it might worth to
investigate if they really need /sys or not.

[*] Note: To simplify the rebuild a little bit, only packages which exist
in trixie have been tested, but the build was made in unstable.