[MNG-7914] Provide a single entry point for configuration

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.0.0-beta-4
• Assignee: Guillaume Nodet
• Reporter: Guillaume Nodet
• Created: 18/Oct/23 10:04
• Updated: 27/Oct/24 10:09
• Resolved: 27/Aug/24 08:09

Description

Looking at MNG-7772, this should not require any code change, but it's all about configuration.

I propose to load / interpolate the following files:

• ${maven.home}/conf/maven.user.properties
• ${maven.home}/conf/maven.system.properties

Those files would be used to load additional user properties and system properties for Maven.  In addition to the simple interpolation mechanism, we should provide two enhancements using special keys ${includes} and ${optionals} which would be used to load additional referenced configuration files such as:

    ${optionals} = ${user.home}/.m2/maven.user.properties, ${session.rootDirectory}/.mvn/maven.user.properties

Being loaded early when Maven is loaded, those files could reference directories to load extensions from:

  maven.core.extensions.directories = ${session.rootDirectory}/.mvn/extensions.xml,${user.home}/.m2/extensions.xml,${maven.home}/extensions.xml

 

In various places, the maven code could be simplified and offer more configuration points at the same time.

Issue Links

• is required by: MNG-8361 Document color style properties
• relates to: MNG-7833 Re-evaluate properties before execution
• relates to: MNG-7984 Provide a way to switch some defaults based on the model version used
• relates to: MNG-6603 XDG Base Directory Specification support
• links to: GitHub Pull Request #1595
• links to: GitHub Pull Request #1674