Earlier quoted context omitted.
What if I'm using something more modern, like chocoaltey? MSI has never played well with CI servers and wix is way too complicated.
Nano server (variant of Server 2016) which has no UI component at all has adopted the appx for Windows Server apps (WSA) so I'd imagine the tooling will improve there. Though you can also build one with a text editor and command line: https://blogs.technet.microsoft.com/nanoserver/2015/11/19/ha...
That's exactly the sort of thing I'm after, thanks. I hate it when configuration is hidden in favor of tooling.