Johannes Bechberger

There is a problem that I was missing in my builds. I'm working on it.

This PR has currently a few issues (that I'm dealing with in the next few) days: - [ ] improve GitHub actions - [ ] fix spurious bug related to...

> Could it be related to #361 ? Yes. Switching to eclipse 4.22 is necessary to build it on Mac M1.

It now is buildable on JDK 17 and only the apptests fail.

I currently unable to get the tests running in eclipse (the devguide does not help), therefore no progress here. The tests that fail, running with maven, seem to be UI...

The test are running on my machine, so hopefully they run in the CI as well.

Tycho 2.6.0 is available but it does not change anything.

The next tycho version is properly tested with JDK 17: https://github.com/eclipse/tycho/commit/4e7ca10e61f585966a7a8091e1418cc29ac2e63d

Removing the workarounds does not seem to work?

> The core libraries target however remains Java 1.8. Why? This seems to prevent us from running on Java 17.