It should work 100% on linux now, (theoretically) and fetch versions properly, it should also work on macos although you'll need to build it manually as i have no mac machine to compile for.

Installing

Arch based distros (Arch, Artix, Manjaro, Endeavor)

You can just run sudo pacman -U ./pineflash-git-0.2.2-1-<your architecture>.pkg.tar.zst and it will install with no issues and you can launch via the shortcut in your app launcher.

Generic Linux

You can move the binary file pineflash_linux to your path (/usr/local/bin/pineflash) and then run it with the following command
pkexec env DISPLAY=$DISPLAY XAUTHORITY=$XAUTHORITY pineflash
to manually install the appmenu shortcut grab the .desktop file from the main git repo and put it in /usr/share/applications/ and the assets/pine64logo.png in /usr/share/pixmaps then you can run it via the .desktop file in most applaunchers.