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https://issues.apache.org/jira/browse/MNG-5971?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15159502#comment-15159502
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Christian Schulte commented on MNG-5971:
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That's been intentional. This should have made you resolve the conflicts
manually by moving the conflicting imports up or down the inheritance hierarchy
so that the inheritance override logic based on Maven coordinates would be used
to resolve conflicts. The latest commit reverts to the former behaviour without
producing such warnings. You should still use the inheritance hierarchy for
overriding dependencies. I understand this has not been possible pre 3.4 and
you cannot use it without enforcing Maven >= 3.4 because it simply will not
work with anything pre 3.4.
> Imported dependencies should be available to inheritance processing
> -------------------------------------------------------------------
>
> Key: MNG-5971
> URL: https://issues.apache.org/jira/browse/MNG-5971
> Project: Maven
> Issue Type: Bug
> Components: Dependencies
> Affects Versions: 3.3.3
> Reporter: Stephane Nicoll
> Assignee: Christian Schulte
> Priority: Trivial
> Labels: close-pending
> Fix For: 3.4.0
>
> Attachments: bom-cloud.zip
>
>
> When a project extends from a parent with a {{dependencyManagement}} section,
> it is not always possible to properly override (and align) the version to use
> for a group of dependencies.
> We typically use Bill Of Materials to gather a group of modules and make sure
> their versions are consistent.
> The following project demonstrates the issue:
> https://github.com/snicoll-scratches/maven-dependency-management
> The first commit is a working use case where the parent uses a bom with
> version A and we use the same bom with version B in the child. Version B is
> used as expected.
> The second commit demonstrates the faulty scenario. Rather than using a bom
> in the parent, we use a direct dependency (provided by that bom). We still
> use the bom with a different version. In that case all the dependencies but
> the one provided by the parent are overridden (leading to mixed versions for
> the dependencies provided by the BOM).
> It looks like the distance is still used to compute the version while the
> graph of dependencies should be flatten at each step for a proper override.
> Thoughts? Thanks!
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