Broken setups due to builtin references to other P2 composite update sites #423

Issue

1. Our Oomph based setups with former Eclipse versions (like e.g. 2024-03) did get broken since your recent update of the update site approx. 2 weeks ago.
2. The setup procedure takes 2-3 times longer as needed.

Root causes

For Issue 1

• The builtin references to the root URLs of composite repos of Checkstyle, SpotBugs and PMD lead to getting installed dependencies being incompatible with former Eclipse platform versions.

For Issue 2

• The builtin references to those composite repos enforce the setup to read any content file from any version beyond the referenced composite root. This makes the setup to take much more time than needed.

Solution recommended

Remove the hard coded builtin references to other composite repos and document what range of versions for each code checker implementation is supported by what version of m2e-code-quality. It must be subject of the individual users setup scenario what version of a code checker dependency is to be installed.