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https://issues.apache.org/jira/browse/MPIR-234?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14679106#comment-14679106
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Hervé Boutemy commented on MPIR-234:
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I'm thinking at this for a long time now, here is where I am for now:

First, the simplest idea: we can add easily in core a list of scms that don't 
require adding artifactId to scm connection and developerConnection (AFAIK, url 
is always expected to add artifactId): if the list is in a resource file, one 
can later add another file to extend the list

But if we do so, the scm.connection does not contain information about the path 
in scm: that's unfortunate, since I'm sure this would be useful for any tooling 
wanting to use data (like release).
Perhaps it would be better to extend git scm url: currently, it is documented 
in http://maven.apache.org/scm/git.html as 
{{scm:git:git://server_name[:port]/path_to_repository}} (other forms are 
similar)
if we extend it to 
{{scm:git:git://server_name[:port]/path_to_repository:path_in_repository}}, we 
can keep path info for tooling
and magically, the simple "add artifactId to path" algorithm is back to be a 
good algorithm

WDYT?

the feature request for directoryname != artifactId is a feature request that 
would just complement the algorithm: once someone finds an algorithm that can 
detect the path when not equals parent+artifactId and not during build (where 
current directory helps) but during resolution from repo, this will be ok
notice: perhaps flatten-maven-plugin can help us on this by expanding directory 
during install

> SCM-link in site of multimodule projects should not append module name by 
> default (at least for git)
> ----------------------------------------------------------------------------------------------------
>
>                 Key: MPIR-234
>                 URL: https://issues.apache.org/jira/browse/MPIR-234
>             Project: Maven Project Info Reports Plugin
>          Issue Type: Bug
>          Components: scm
>    Affects Versions: 2.4
>            Reporter: Mirko Friedenhagen
>
> I have setup a simple multi module project (see 
> https://github.com/mfriedenhagen/multi-module-sample/tree/multi-site-complex) 
> which uses git on github as {{scm}}. While rendering the site, MPIR will by 
> default add the name of the module to the SCM-URLs in source-repository.html. 
> So instead of https://github.com/mfriedenhagen/multi-module-sample/ I see 
> https://github.com/mfriedenhagen/multi-module-sample/core/, 
> g...@github.com:mfriedenhagen/multi-module-sample.git/core and 
> git://github.com/mfriedenhagen/multi-module-sample.git/core in the report for 
> the core module. All these URLs are invalid. For SVN this could be assumed to 
> be the right behaviour, for git and probably other SCMs this is not true. As 
> a workaround I have to reconfigure the scm section (see 
> https://github.com/mfriedenhagen/multi-module-sample/blob/multi-site-complex/core/pom.xml)
>  in the modules like this:
> {code:xml}
> <scm>
>   <connection>${project.parent.scm.connection}</connection>
>   
> <developerConnection>${project.parent.scm.developerConnection}</developerConnection>
>   <url>${project.parent.scm.url}</url>
> </scm>
> {code}



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