If I understood correctly you said in phab:T283083 [Session] RFC: Re-evaluate librsvg as SVG renderer on Wikimedia wikis , that phab:T40010 RFC: Re-evaluate librsvg as SVG renderer on Wikimedia wikis is stuck by phab:T216815 Upgrade Thumbor to Buster, which is planed for this summer and might delay depending on the thumbor-responsible person User:GDubuc_(WMF), who is very busy because he is also in the Wikimedia Performance Team. (However I do not understand how postponing reduces work?)
However regarding my memory about your statement I have two questions:
- According to the Debian-release-table, the end of Security-support ended June2018 (3years ago), and the end of long-term-supports will end June2022 (one year ahead). Is there a different Wikipedia-update-circle?
- Why does phab:T40010 RFC: Re-evaluate librsvg as SVG renderer on Wikimedia wikis depend on phab:T216815 Upgrade Thumbor to Buster? resvg is portable, so it is independent on the thumbor-server-version, so I see no reason to wait on the thumbor-update.