I'm trying to remaster the 20.04 iso for single-user root use. However, I am sure this question also applies to 19.10 as it suffers the same issue. This distro is for systems that test hardware and are shared between many people, the systems serve that purpose and that purpose only. These systems were last running 16.04 but we need newer kernels (were running 5.3 on 16.04 and are already basing 20.04 off of 5.6 oem package)
As part of the remastered iso creation scripts, I install some (non-public) deb packages that create .desktop launchers onto the Desktop. However, these icons do not work as intended. Digging into things, it seems you need to set gnome's metadata trust to true, but I can't seem to find a way to do this while building an iso. Running:
gio set desktopfile.desktop "metadata::trusted" true
in the chroot during the iso build process returns:
gio: Setting attribute metadata::trusted not supported
I found an autostart script I could run to trust all *.desktop files on gnome's start up (courtesy of the second answer here: Trust desktop icons without clicking them manually in Ubuntu 18.04 Gnome 3), but this relies on waiting for and then restarting nautilus-desktop, which has since been deprecated.
I tried using nemo-desktop to handle icons, but it refuses to run as root. It looks like a simple patch to the source to allow it to, but I'd like to avoid having to do that.
