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https://issues.apache.org/jira/browse/MNG-6059?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15369150#comment-15369150
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Robert Scholte commented on MNG-6059:
-------------------------------------

Yes, we have a different view on this and that's okay. Hence I didn't block 
this change :)

bq. but this improvement is not in Maven core: it's in maven-scm

Indeed, this is what I would expect: every scm provider must be able to 
calculate the connection based on some root and the path to a specific Maven 
module.
But wouldn't this imply that maven-scm (including all providers) suddenly 
becomes part of the Maven distribution? I don't like that at all.
What I'm trying to figure out is why the scm-part in sub-modules are so 
important for the *effective* pom? The plugins I mentioned don't need it or are 
capable to calculate it.
I would love to see this work out of the box without any magic attributes on 
the places where it is useful, just simply based on the provider (by the 
provider). Otherwise I'm afraid we can't cover all providers for 100%.



> Important use cases not covered, as child.inherit.append.path affects all 
> children
> ----------------------------------------------------------------------------------
>
>                 Key: MNG-6059
>                 URL: https://issues.apache.org/jira/browse/MNG-6059
>             Project: Maven
>          Issue Type: Bug
>          Components: Inheritance and Interpolation
>         Environment: Apache Maven 3.4.0-SNAPSHOT 
> (227085283b6379038ec16f4cf9ad2e8869cef694; 2016-07-06T21:29:12+02:00)
>            Reporter: Andreas Sewe
>
> The {{child.inherit.append.path}} attribute introduced with MNG-5951 
> unfortunately does not support the use case where the children of the element 
> with the attribute should follow different inheritance rules. Take a typical 
> configuration for Github, for example (taken from 
> <http://central.sonatype.org/pages/requirements.html>):
> {noformat}
> <scm>
>   
> <connection>scm:git:git://github.com/simpligility/ossrh-demo.git</connection>
>   
> <developerConnection>scm:git:ssh://github.com:simpligility/ossrh-demo.git</developerConnection>
>   <url>http://github.com/simpligility/ossrh-demo/tree/master</url>
> </scm>
> {noformat}
> If the {{ossrh-demo.git}} repository contains a child module called 
> {{some-module}}, then that child’s {{scm/url}} should become 
> {{http://github.com/simpligility/ossrh-demo/tree/master/some-module}} as per 
> the normal inheritance rules, but both the {{scm/connection}} and 
> {{scm/developerConnection}} URLs should remain unchanged.
> Unfortunately, this is not possible with {{*child*.inherit.append.path}}, 
> which acts on all children simultaneously.
> IMHO, this is a conceptual problem. In particular, setting 
> {{child.inherit.append.path}} on the *root* element to just control a single 
> child ({{project/url}}) feels wrong, as the attribute is in all likelihood 
> not even located close to the {{<url>}} element it controls.



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