I'm the maintainer of the FFS flatpak package distributed by Flathub:
https://flathub.org/apps/details/org.freefilesync.FreeFileSync
In the past, I compiled FFS from source, but due to various problems (like FFS depending on custom-patched system libraries, and others) I switched to distributing FFS Linux binaries, as provided on the download page:
https://freefilesync.org/download.php
I have been notified by a community member that the current license seems to disallow that. Specifically, on https://freefilesync.org/faq.php#distribute it says:
I'm not a lawyer, but it seems that converting the provided binaries (previously included in a tarball, now in a runnable installer) into a flatpak package is currently forbidden.The software must be distributed free of charge and without modification to the contents of the installer package. Redistributing the installer package with any files added, removed, or modified is prohibited. The inclusion of the installer package or any of the included files in a different archive, or in a different installer is forbidden. For example, the integration into a third-party automated installation mechanism is forbidden without the prior permission of the author.
I'm writing this post to request a permission from the FFS author (Zenju), so that Flathub can continue to distribute FFS pre-compiled binaries. If you, Zenju, don't agree with this, I'll either need to switch to compiling from source again, or remove FFS from Flathub, if I understand it correctly.
Thank you for your response.