e.g.

    corretto = {
      hasDefault = false;
      versions = [ "11" "17" "21"];
    };

and

    zulu = {
      hasDefault = true;
      versions = [ "11" "17" "21" "24"];
    };

marketing like "Validates runtimes by passing a wide variety of application test suites, ensuring compatibility and reliability." makes me worry that it'd be a whole ordeal where it wants to fetch a bunch of stuff from the internet and have all kinds of implicit dependencies and at best they make it easy by providing a Docker container we can't use or something.

but I haven't looked into it at all, so it's possible that it would be easier than this

I expect it's the kind of thing that might be suitable for passthru.tests, to be manually run on an update, rather than blocking the build on Hydra

Yeah. And I also have the impression getting AQAVit running under Nix would be non-trivial. I don't think it is something the Nix Java team should prioritize in the short-run and it's not something I see myself having the time or inclination to tackle. But it might be nice to have eventually.

either the Temurin build scripts are a good fit for us and we can use them in our OpenJDK source builds, or they would make the derivation less maintainable or less flexible and so we should keep driving the OpenJDK build on our own

The individual working on it seems committed to doing it, so maybe we find out.