It seems that a namespace only has access to process that originates inside itself
systemctl --user list-units
Failed to connect to bus: No medium found
as we can see, the same user doesn’t have access to other processes so we would need to duplicate every process above the namespace until we could acess the media
would duplicate of everything - pulsewire, dbus, etc - even work ?
Thank you for summarizing it up
I’ve been using network namespaces in Linux where each one also use a different user; this way you can have multiple profiles of apps separated not only by permissions but also by the VPN connection that is the only route out
So you can have a connection that will supply your favorite iso sharer, a VPN connection to work, all unaware of each ot
I still haven’t figured how to make GUI media applications work on them though