This page is work in progress, feel free to ask on dev@sling if anything seems incorrect or is unclear
As summarised by Stefan Seifert:
Currently we have only one launchpad in trunk, which contains a mixture of release dependencies and snapshot dependencies. this makes it difficult to release new versions because one has to release all snapshot projects first, and perhaps the last relese version is fine as well.
We came up with a new proposal to fulfill the different needs:
For converting release versions to SNAPSHOT ones, Bertrand Delacretaz has come up with a shell script that sets all dependency versions to SNAPSHOT , although it seems to not work in all situations. This script would be run on Jenkins or locally to convert the 'release' (stable) launchpad to a 'snapshot' (unstable) one.
We also discussed how to handle tests deployed under the launchpad which test functionality which is only present in SNAPSHOT versions. The proposals where:
A new pair of Jenkins jobs need to be created, to cover building the unstable launchpad and running the integration tests against it. The launchpad should be deployed with a different classifier, to prevent any mix-ups on repository.apache.org.
Maven 3.5.0 has introduced a concept of CI-friendly-versions ( see more information at https://maven.apache.org/maven-ci-friendly.html ), but it's not clear if we can benefit from this feature.