Tycho 5

[LorenzoBettini]

Development has already started on branch https://github.com/eclipse/xtext/tree/cd_tycho50

However, the build is currently failing, also on GitHub Actions after clearing the caches:

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

This seems to have happened after I rebased the branch on the main branch. Previously it used to resolve the snapshots.

@cdietrich had you already seen such problems? Maybe I did something wrong when rebasing and solving merge conflicts...

[cdietrich]

Tycho repo available

[LorenzoBettini]

I think I lost these lines during rebase:

	<pluginRepositories>
		<pluginRepository>
			<id>tycho-snapshots</id>
			<url>https://repo.eclipse.org/content/repositories/tycho-snapshots/</url>
		</pluginRepository>
	</pluginRepositories>

I'll re-add them