[16:25 csmart ~]$ virt-install
ERROR
--os-variant/--osinfo OS name is required, but no value was
set or detected.
This is now a fatal error. Specifying an OS name is required
for modern, performant, and secure virtual machine defaults.
You can see a full list of possible OS name values with:
virt-install --osinfo list
If your Linux distro is not listed, try one of generic values
such as: linux2020, linux2018, linux2016
If you just need to get the old behavior back, you can use:
--osinfo detect=on,require=off
Or export VIRTINSTALL_OSINFO_DISABLE_REQUIRE=1