There are only 24 packages left using dpatch and the vast majority of remaining uses are packages which haven't seen a maintainer upload for a decade or longer.
Some of these have existing "please migrate to source format 3(quilt)" bugs already and in the interest of more streamlined packaging workflows and eliminating technical debt I think it's time to remove dpatch for bookworm. So unless there's objections, I'd bump existing bugs to RC and file bugs where they don't exist. And anything that doesn't get fixed/NMUd/removed can then be removed along with dpatch before the bookworm freeze. Breakdown of remaining packages grouped by the year they've seen their last maintainer upload: 2006: efax vdk2 2007: syrep tapecalc 2008: cryptcat flexbackup xcal 2009: redet spell 2010: elscreen myspell scim-canna scim-skk vsdump xxgdb 2011: bopm gkrellm-x86info ibam lifelines 2013: cadaver dvbsnoop 2018: mgetty 2019: libdumbnet 2021: qmc
