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https://issues.apache.org/jira/browse/MNG-7562?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17616434#comment-17616434
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Garret Wilson edited comment on MNG-7562 at 10/12/22 1:50 PM:
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I [asked about this on Stack Overflow|https://stackoverflow.com/q/73239332],
and someone [suggested|https://stackoverflow.com/a/73983784]
{{child.licences.append.path="false"}}, which is apparently a mechanism
introduced in MNG-6059 (building on MNG-5951) and documented briefly in [Maven
Model Builder|https://maven.apache.org/ref/3.8.6/maven-model-builder/]. But
this mechanism doesn't seem to prevent inheritance—it only seems to prevent
appending a path to the inherited value, unless I'm reading it incorrectly.
was (Author: garretwilson):
I [asked about this on Stack Overflow|https://stackoverflow.com/q/73239332],
and someone [suggested|https://stackoverflow.com/a/73983784]
{{child.licences.append.path=false}}, which is apparently a mechanism
introduced in MNG-6059 (building on MNG-5951) and documented briefly in [Maven
Model Builder|https://maven.apache.org/ref/3.8.6/maven-model-builder/]. But
this mechanism doesn't seem to prevent inheritance—it only seems to prevent
appending a path to the inherited value, unless I'm reading it incorrectly.
> Mechanism for preventing inheritance of sections such as <licence>.
> -------------------------------------------------------------------
>
> Key: MNG-7562
> URL: https://issues.apache.org/jira/browse/MNG-7562
> Project: Maven
> Issue Type: Improvement
> Components: Inheritance and Interpolation
> Affects Versions: 3.8.6
> Reporter: Garret Wilson
> Priority: Major
>
> There needs to a way in the Maven POM to prevent an element from being
> inherited altogether in child POMs.
> We are currently publishing a Maven POM that is useful to serve as the parent
> POM for various projects. Some of the projects that use the POM will be open
> source, but some will not be. To designate our parent POM as open source, we
> include this:
> {code:xml}
> <licenses>
> <license>
> <name>Apache-2.0</name>
> <url>https://www.apache.org/licenses/LICENSE-2.0</url>
> <distribution>repo</distribution>
> </license>
> </licenses>
> {code}
> This essentially says, "this project is open source".
> Unfortunately because of [POM
> inheritance|https://maven.apache.org/pom.html#Inheritance], any project that
> uses this parent POM will also effectively be saying "this project is also
> open source", because the effective POM of all descendant projects will also
> include this same license section.
> Developers could try to remember to include some {{<licenses>}} section to
> override this license, but the whole point of the parent POM is that it
> should given developers less to do, not more. Besides, some private projects
> (even ours) might not wish to indicate a license at all!
> There needs to be a way for our public parent POM to indicate that it is open
> source without effectively making all child projects open source as well
> through POM inheritance. Preventing the {{<licenses>}} section from being
> inherited is one example.
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