Altspace & VRChat... both are incompatible

I have a pretty complicated world I’ve built and successfully ported to Altspace. I’ve duplicated the entire project, deleted Altspace SDK from my project then attempted to install VRChat SDK, but the install fails due to existing SDK using a name VRChat needs.

Using the console, I found the offending file in Library/PackageCache that still references Altspace and deleted said file. Upon another install of the VRChat sdk, Unity rebuilds the missing Altspace file first, then reports the same error.

Anyway to completely uninstall Altspace??

fwiw, the name of the file that wont leave:
com.microsoft.altspacevr_uploader@ef6d52354622-1652123033519

solved. Altspace needs to be uninstalled from the PackageManager to have it completely go away.
Credit: Mark-S#5612