Absolutely. I made a tentative packaging, at https://salsa.debian.org/debian/xournalpp
Builds and works fine. I use it daily, for teaching remotely. Would welcome testers. The only reason I have not actually pushed it into Debian is that the debian/copyright file is a bit of a mess. Some of the .svg files in particular have embedded copyright strings with CC of various flavours, and nobody's had the time or enthusiasm to dive in and check all the copyrights and record them in debian/copyright, and if any problematic .svg files are found to replace them with free replacements from one of the collections of actually free artistic SVG files.
