Generally most Linux distributions are literally the same thing underneath. I have recently done an LFS build (using version 12.3 of the book). The same files were in the same directories in Debian, Arch and LFS for the most part.

I even had a look at source code for makepkgs in Arch and they are literally the same commands in the script that the book has you manually type in.

The packaging critique comes up over the years but it is a bit of an overblown.

Building packages for different distributions isn't super difficult. I've build Arch Packages using the ABS, DEBS and RPMS and they are all conceptually the same. Having a quick skim of the Flatpak instructions it doesn't look that different either.

If you don't want to bother with all of that. You can just have a script that drops the installation either in /opt or ~./.local/. I am pretty sure Jetbrains Toolbox does that, but I would need to check my other machine to confirm and I don't have access currently.