Tamas Cservenak created MNG-7774:
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Summary: Maven config and command line interpolation
Key: MNG-7774
URL: https://issues.apache.org/jira/browse/MNG-7774
Project: Maven
Issue Type: Task
Components: Command Line
Reporter: Tamas Cservenak
Fix For: 3.9.2
Note: this issue "mildly follows" functionality done in Maven 4 as part of
MNG-7038 and MNG-6303, with partial implementation only (is not full
back-port), hence "mild introduction".
Rationale: many new resolver features are akin to be able to store their
configuration and input along SCM tracked Maven project sources. Sadly,
currently this is not possible. The two issues targeting Maven4 (MNG-7038 and
MNG-6303) with introduction of session and project "topDirectory" and
"rootDirectory" properties solve this. Still, Maven 3.9.x does not need all of
this.
So, idea is following:
* extend MavenCli to interpolate Maven arguments
* introduce two special properties {{session.rootDirectory}} and
{{session.topDirectory}} in interpolation. They are special, as they may not be
defined, and IF they are not defined, their use in Maven argument interpolation
causes error (Maven will not boot).
* limit the use of the two new properties to Maven CLI interpolation only.
This makes projects relying on Maven CLI interpolation "permeable" between
Maven 3.9.x and Maven 4, while all the whistle and bells (exposing this via
session or project) will be available in Maven 4 only.
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