So it does not actually make sense any more to keep gpr in Debian. So I am in favor of its removal, too.
gpr is not only not upstream-maintained any more and depending oon the
obsolete GTK2, it is also only used for printing with LPD/gnulpr/LPRng,
all these being printing systems which are obsolete for near 2 decades
(replaced by CUPS) and all not maintained upstream any more.
