I nearly abandonned core development since the ESH migration, setting up a working eclipse environment is so difficult - I want to give it a try once again.
I think I succeeded in installing an eclipse environment with core bundles. After many time updating projects/ mvn clean/ mvn install everything seems to work fine and I can launch org.openhab.demo.app.
I added magic addon to test changes I’m trying to introduce in org.openhab.core.model.thing and org.openhab.core.thing bundles (as well as org.openhab.core.model.thing.runtime). I have added these bundles in the org.openhab.demo.app pom.xml :
While I am not working on OH core I find above way (standalone instance) quickest to get started with and closest to “common way”. IDE support makes things faster, but sometimes breaking for unclear reasons.