What Hee3 is pointing out is that we have a KoLmafia build that includes a bundled JRE that means you don't have to change your old JDK. We haven't exactly announced it or rolled it onto the CI server, but it's there and we've used to to solve a few niche requests like this.Oh, kolmafia found the adoptium install automatically and worked fine, it's just that minecraft (or at least, 1.12.2 minecraft) immediately crashed on launch. I was able to figure out how to get the server bat and the client launcher to specify the path back to the existing java, so that should work for now.
version = X.Xinstead of
version >= X.X. There's some tips in that for making it work.