Release Notes – Maven 4.0.0-alpha-8
The Apache Maven team would like to announce the release of Maven 4.0.0-alpha-8.
This is alpha release, not suitable for production.
Maven 4.0.0-alpha-8 is available for download.
Maven is a software project management and comprehension tool. Based on the concept of a project object model (POM), Maven can manage a project's build, reporting, and documentation from a central place.
The core release is independent of plugin releases. Further releases of plugins will be made separately. See the PluginList for more information.
If you have any questions, please consult:
- the web site: https://maven.apache.org/
- the maven-user mailing list: https://maven.apache.org/mailing-lists.html
- the reference documentation: https://maven.apache.org/ref/4.0.0-alpha-8/
Overview About the Changes
This alpha release provides new cornerstone features for the future Maven evolution.
In particular, the POM model which was set in stone to a 4.0.0 version since Maven 2.0, is now able to evolve. For modules that have a packaging which is not POM, the flattened consumer POM is now installed/deployed instead of the main POM, eventually translated back into a 4.0.0 model version for consumer compatibility. The build POM is also installed / deployed unchanged with build classifier. This allows the introduction of the 4.1.0 model which already brings a few improvements.
The full list of changes can be found in our issue management system. Among those are:
- switch from Plexus XML to StAX / Woodstox for XML parsing
- support for alternative POM syntaxes
- introduce a 4.1.0 model version
- add flexible goal ordering (in 4.1.0 model)
- allow glob patterns in dependency exclusions
- support proxy port interpolation in
settings.xml - add support for TRACE logging level (with style “bold,magenta”)
- add model version analysis and downgrade
- attach the build POM (with
buildclasifier) and simplify the build/consumer implementation - add a new BOM packaging
- trim down the consumer POM
- expose the rootDirectory for model processing
- support configuration in
extensions.xml/\<extension>elements (in 4.1.0 model) - generic
.urisuffix to get the URI representation of any file property - allow registering Maven core extension in
.m2directory instead ofMAVEN_HOME - colorize transfer messages
- the
rootattribute introduced in alpha-7 has been moved to the new 4.1.0 model
Known Issues
If you find any incompatibility with latest versions of plugins, do not hesitate to report those.