has anyone successfully built an AppImage package with a Lazarus/Freepascal executable?
Yes - see Ocrivist at
http://www.kirasoft.co.uk/downloads/The AppImage documentation has a learning curve that I am still climbing, but a simple implementation can be done:
1: Download linuxdeploy for your platform (32bit or 64bit) from
https://github.com/linuxdeploy/linuxdeploy/releases/2. The command that I used was
./linuxdeploy-i386.AppImage --appdir=OcrivistAppImage --icon-file=./../trunk/images/ocrivist.png --executable=./../trunk/ocrivist --create-desktop-file --output appimageThe appdir will be created for you the first time that you run it. Obviously you will need to change the paths and filenames to suit your setup. You will need a .png file in a suitable size (eg 128x128) to serve as an icon.
The Appimage that results is not optimal, but it will work and serve as a starting point. For example, you will get a warning that the .desktop file is basic and should be improved.