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Posted to dev@mahout.apache.org by "Sean Owen (JIRA)" <ji...@apache.org> on 2011/03/10 09:32:59 UTC
[jira] Commented: (MAHOUT-622) Mahout dependencies are unified
under dependency management in parent pom
[ https://issues.apache.org/jira/browse/MAHOUT-622?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13004994#comment-13004994 ]
Sean Owen commented on MAHOUT-622:
----------------------------------
Sounds great to me. I doubt (I hope) there are conflicts, so should be a cleanup that causes no trouble.
> Mahout dependencies are unified under dependency management in parent pom
> -------------------------------------------------------------------------
>
> Key: MAHOUT-622
> URL: https://issues.apache.org/jira/browse/MAHOUT-622
> Project: Mahout
> Issue Type: Improvement
> Affects Versions: 0.4
> Reporter: Dmitriy Lyubimov
> Priority: Minor
> Labels: build, maven, pom
> Fix For: 0.5
>
>
> As far as I understand, Maven encourages "best practice" of unified view of dependency versions specified under <dependencyManagement> usually in a parent pom, instead of under <dependencies>.
> In Mahout, this practice is only partially followed. Some dependencies have concrete versions under <dependencies> tag in submodule poms. Proposed change is to raid those and move version declarations into parent pom.
> This (as far as i understand) achieves 2 things:
> * Mahout assembly would include same versions for all modules thus ensuring runtime module dependencies are the same as compile time;
> * Somebody who uses Mahout as a dependency, could import Mahout dependencies using <scope>import</scope> spec thus inheriting Mahout's versions for shared dependencies.
> For most part the change would be nominal although in certain cases we'd need to sort out through cross-module conflicts (if any). Commons-math was one, not sure if there are more. If there are none, the changes would be rather mechanistic.
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