Which version of emqtt are you referring to? We are successfully using 1.11.0 (with AWS IoT Core), which I believe is the "blessed" version for elixir.
I do not remember all the details, but I think it was during the transition from MQTT 3.1 to 5.0. We only use 3.1 and the 5.0 code was not yet finished, emqtt had a hard coded a dependency with an old lib, which we wanted to upgrade. There were no hex package, it was pulled from github. And then the repo on github disappeared (or maybe moved?)
I will have a look at this new package, it looks promising
Ah, yes - we are pulling from the tag on GH. However, I believe the hard dependency on the older version of gun was fixed recently. IIRC, that was what prevented a proper package at the latest version from being on hex.
I was able to update to the latest tag of emqtt on GH (1.14.4), which was not previously possible. I don't believe there are any blockers now to a package on hex.pm, so hopefully this is made available soon.
I will have a look at this new package, it looks promising