I have it building on MacOS now and did some basic user testing with @AndyAlban in the office:
He’s in the process of building his own custom template now, and I’m sure he’ll share it here once he’s done.
I’m not sure when I’ll get the linux test builds out, it should be fairly soon - I just want to fix the few small issues Andy has raised and stuff I noticed while he was testing.
Either way, this is a really good day for the project:
- It builds on another operating system
- It works when you open it
- All the functionality works as expected
Happy times. 
PS: apologies for the terrible mobile phone video.