Tycho 4

[LorenzoBettini]

Closes #2694

I've also taken the chance to update our Maven wrapper to 3.9.6

Note that I had to do a few adjustments concerning tests that must be executed with maven-surefire, since as documented, Tycho 4 does not automatically enable maven-surefire anymore.

[cdietrich]

can you also request/pr against xtext-reference-projects?
should dm example be updated too?

[LorenzoBettini]

can you also request/pr against xtext-reference-projects? should dm example be updated too?

The Domainmodel example in this repository has already been updated.

Concerning reference projects what should I do in particular?

[cdietrich]

you import the project.
run the launcher.
see the diffs
update the domain model manually.

check github workflows build.yml

[LorenzoBettini]

OK.
Can I do it independently from this PR, or should this be merged first?

[cdietrich]

ususally you do it the other way round
the referrence projects show that your changes to the wizard / dm example work

[LorenzoBettini]

@cdietrich I created the PR for reference projects, hoping I got it right

[LorenzoBettini]

@cdietrich now that xtext/xtext-reference-projects#410 has been merged, can I merge this as well?

[LorenzoBettini]

@cdietrich I'll also remove your old branch

[cdietrich]

yes. can you please also rebase the 50 one

[LorenzoBettini]

sure!

[LorenzoBettini]

@cdietrich I rebased your branch and solved the conflicts, please have a look

[LorenzoBettini]

On Jenkins it fails with

14:52:51  [INFO] Scanning for projects...
14:52:51  [WARNING] The POM for org.eclipse.tycho:tycho-maven-plugin:jar:5.0.0-SNAPSHOT is missing, no dependency information available
14:52:52  [ERROR] [ERROR] Some problems were encountered while processing the POMs:
14:52:52  [ERROR] Unresolveable build extension: Plugin org.eclipse.tycho:tycho-maven-plugin:5.0.0-SNAPSHOT or one of its dependencies could not be resolved: The following artifacts could not be resolved: org.eclipse.tycho:tycho-maven-plugin:jar:5.0.0-SNAPSHOT (absent): Could not find artifact org.eclipse.tycho:tycho-maven-plugin:jar:5.0.0-SNAPSHOT @ 

I don't understand why... on GitHub Actions it's building...