There is a very serious amount of work going on with iplug2 and linux at the moment which you can view here:
https://github.com/iPlug2/iPlug2/issues/105
I (as one of the iplug2 devs) do not have lot of linux experience, and we are dependent on community contributions, but we would certainly welcome the ability to run on linux, so we hope to incorporate these changes as soon as we can. Of course, if you want to use a different branch this might not help you, but we hope that iplug2 will support linux soon.