I didn't mean that these other non-packaged options were direct
alternatives to drmaa, only that snakemake already doesn't have all its
features available in Debian without installing external packages, and
that I don't consider losing one more to be a serious bug.
If anyone _wants_ to work on them, I have a (possibly out of date) list in
https://sources.debian.org/src/snakemake/6.15.1-2/debian/README.source/
but I do _not_ consider this a blocker for drmaa's removal.
(I don't actually use snakemake; if anyone who does wants to take it
over, let me know.)
