A while ago I managed to get Libvert running on OS X. Sometime last year, things were changed in the Brew.io version of LibVert that caused you to no longer be able to open the information screen on VMs that you are running.
The problem seems to be that the files relating to the The USB ID Repository, and The PCI ID Repository have moved / been removed.
This problem can be fixed by running the following code:
mkdir /usr/local/Cellar/libosinfo/1.7.1/share/libosinfo wget http://www.linux-usb.org/usb.ids -O /usr/local/Cellar/libosinfo/1.7.1/share/libosinfo/usb.ids wget https://pci-ids.ucw.cz/v2.2/pci.ids -O /usr/local/Cellar/libosinfo/1.7.1/share/libosinfo/pci.ids
I have installed wget via brew, so you may not already have it on your system!
Of note, Red Hat has deprecated virt-manager in their 8.1 release, with a view to using ‘Cockpit‘
The shift is towards Cockpit, which is a web-based interface to manage machines. It has features for containers also. I myself have not tried it yet, but hopefully it has near-complete feature parity with virt-manager, particularly in configuring the machines.