This is a Flatpak package for Thomas Okken's most excellent Plus42 — an enhanced HP-42S calculator simulator.
You can install the Flatpak by downloading from
releases
or you can add my repository instead (work in progress).
Run ./build.sh.
Why is this not in Flathub?
Unfortunately the submission to Flathub was not approved due to upstream packaging practices not being acceptable to Flathub. If the situation changes in the future I will try again.