I think the relevant components here are all part of the default install. I’ve only been using EOS for about a week. pacman says that file-roller was “Install Reason : Explicitly installed”, but I don’t think I did that manually, so I suspect it was part of the installer? It also says file-roller is “Optional For : thunar-archive-plugin” which could be relevant since xfce is using thunar as its default file manager.
I opened a zip file with file-roller (the default association), right clicked on a file in the zip, chose Open With, and received an error dialog as follows:
Could not perform the operation
GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name is not activatable
[Close]
I wasn’t able to reproduce this on arch, but I have a variety of additional gnome and gtk packages on my arch system.
I often switch between the gnomes File-Roller and kdes Ark. I’ve found file roller better for exploring but ark better for compression (faster and smoother)