They published this blog post that lists all the projects they supported, and calls for the community to submit projects to support in a form.

The blog post did not acknowledge the situation, but the list showed that they stopped supporting Omarchy and kept support for Hyprland. It was noted during the drama that Hyprland’s toxicity levels have dropped since they set up a moderation team. Their reputation might not represent them as they are currently.

I stopped following the events at this point, so if something happened after that, I’m not aware of it

There’s a note on the Flathub page that it requires permission to your home folder, so this should be granted automatically. Maybe they made an update since you had the issue?

In most cases the sandboxing should not require user intervention. Apps can either use the native file picker (which gives them access to selected files) or list which directories they want to access in their manifest. If an app tells you to select a file by path-in-text-input or homemade file picker, but doesn’t have permission to the relevant directories, that’s a config issue on the packager’s side.

You should install Signal as Flatpak. It should be available through the app store if you are on Mint. Otherwise see https://flathub.org/en/apps/org.signal.Signal

Do not consult companies websites for how to install on Linux if you can avoid it, they will nearly always break your setup. Just head for the app store and click the big green button.

If you already have the correct version of the flatpak installed, you can try flatpak build-bundle.

flatpak build-bundle LOCATION FILENAME NAME where

• LOCATION is the path of the repo on disk. Run flatpak info -l org.kde.arianna, and copy the part before /app
• FILENAME is the output file name, preferably .flatpak. Eg: arianna.flatpak
• NAME is the name of the app, here org.kde.arianna

The generated file can be installed with a double-click, or with flatpak install <file>

This is the equivalent of an Android .apk. It contains the app but depends on a runtime. If you want to install it in a few years, odds are the runtime will no longer be available. You can backup the runtime the same way with the --runtime option.

flatpak build-bundle --runtime LOCATION FILENAME NAME where

• LOCATION same as earlier
• FILENAME eg arianna-runtime.flatpak
• NAME is the name of the runtime, which you can get with flatpak info --show-runtime org.kde.arianna

This takes a while, for some reason. Maybe it’s compressing stuff?

The runtime is installed the same way as the app: double click or flatpak install.

Note: I only did this once, and not specifically on Arianna. Hope it works.