Currently installed version is smartmontools-6.4-1.5.x86_64 which has no support for NVMe. Tried building smartmontools-6.5 and succeeded. How can I have a rpm preferably in download.opensuse.org-oss or in a local repo?
Submit a feature request to https://bugzilla.opensuse.org.
Recommend you also include your steps for building, if you built on a public service like OBS then someone could probably easily inspect and integrate… But if you built locally on your machine then every detail you can provide would probably help someone else understand what you did and why.
HTH,
TSU