Upstream fwupd has made it’s first ABI bump in ~8 years and due to the potential impact for regressions has forked the 1.9.x series into a 1_9_X branch.
As described in upstream fwupd/SECURITY.md at main · fwupd/fwupd (github.com) 1.9.x will continue to be supported for a while.
I would like to still be able to produce snaps both for the 1.9.x series and the 2.x.x series separately, and thus would like to open up a 1.9.x track.
Thanks for the thorough explanation. Avoiding possible regressions due to backwards incompatibility is a good case for creating a new track so I’m +1 on this.