I would not reccomend building on your s9. I run mine on proxmox so I just spin up a whole new vm. Also, the latest docs are outdated, there is another setup for 0.3.6 that I can link to if you'd like.
I can mess around with it for MSP since that's the easier code base, and musicians can start doing their own hosting. I had done it once for these guys, which is basically Start9 as a service. https://www.federated.computer/ so I know it's possible.
Any docs on how to build on my own Start9 box in dev mode or anything?
Discussion
Yeah, I'll setup a VM and start playing around. I think people having a digital sovereignty box is pretty cool.
You'll want to get the 036 alpha version to do the development cuz they told me they aren't reviewing anything for o35 any more for the community registry since it's close.