My mistake, sorry. I've just tried on a clean Ubuntu VM, and Sigrok is still part of the latest DSview, just that it is not exposed to the end user.
At best, you can install both DSView to use with DSLogic, and another standalone Sigrok install for oscilloscope. Last time when I've tried Sigrok with Pulseview (for DSlogic), it was working, but with lots of hiccups, it was not fully usable. After spending some hours trying to make it work properly, I've give up, and since then using DSView instead.