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https://issues.apache.org/jira/browse/MNG-7760?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17711224#comment-17711224
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Michael Osipov commented on MNG-7760:
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Is this a Maven problem or a plugin problem?
> Site stage/deploy should respect 'child.site.url.inherit.append.path="false"'
> and not use relativePath related to that parent
> -----------------------------------------------------------------------------------------------------------------------------
>
> Key: MNG-7760
> URL: https://issues.apache.org/jira/browse/MNG-7760
> Project: Maven
> Issue Type: Bug
> Affects Versions: 3.9.1
> Reporter: Jeremy Landis
> Priority: Major
>
> All versions of maven have long been affected by this and there are many
> tickets opened / closed claiming to have resolved or seem to be outstanding
> for years with no resolution. I believe they are mostly related.
> The 'child.site.url.inherit.append.path="false"' was added back in maven
> 3.6.0 with claim to stop this behaviour but its never worked outside of
> effective pom looks right IMO. At least most platforms support that now
> (artifactory was late in that game).
> Currently regardless of that setting, the maven site plugin doesn't respect
> it or even look at it from what I can tell. Its there in the debug tree but
> the code doesn't appear to look at that to determine what it will do with
> relativePath.
> So, if I have project example [https://github.com/hazendaz/base-parent] and I
> happen to have those set (such as
> https://github.com/hazendaz/base-parent/commit/58e9f8a7749a80e74e8197d5b90b17458cadb161),
> then anything downstream using that parent which is unrelated I would expect
> to adhere to the request and not attempt to use the super pom for its
> calculations at all. But it does not do so.
> I suspect areas of code problematic are getTopLevelProject(MavenProject) or
> 'getDeployModuleDirectory'. The later being where it matters with
> 'relativePath' determined.
> The main issue is with multi module downstream projects. Fixing this issue I
> suspect would have immediate impact on being able to use the site plugin
> directly and not need scm publish. Scm publish tends to work for single
> module but it still suffers from fact that the site plugin messes up the data
> before it ever gets there.
> For example, if my project is 'somerepo.git', I would expect site:stage to
> put the data in 'target/staging' as the documentation states it will do so.
> It however does not, regardless of the above noted setting. What it does
> instead is determine that it needs the relative path to be '../somerepo.git'
> just because it has a parent pom from some other project from same hosted
> platform (gh-pages on github). So the staging then puts that in
> 'target/somerepo.git' instead. So maven scm publish cannot even see that.
> The site deploy fails to do it correctly as it completely changes out the
> repo to deploy to and tries to go to the parent which in most cases like this
> isn't related at all. My base super pom for example is used by quite a
> number of repos and they all have issues with site distributions as a result.
> So how can we make the site plugin actually respect
> 'child.site.url.inherit.append.path="false"'? Or any way to actually make
> that easier like configure it to just stop doing that logic as unnecessary.
> The pom settings IMO are over bearing as it is so a config option would be
> far better and easier to implement.
> I've debugged this far enough to just keep changing the site plugins
> determination on the relativePath to be './' which fixes the issue.
> IMO I don't think maven should even be touching items like this, its so hard
> to understand the math as a result. Thus why so many tickets get opened for
> same thing in various different ways. Over the years we have tried just
> about everything to make this work and honestly the only thing that really
> does currently is to drop maven from doing the site distribution entirely and
> use gh-actions to do the same or other solutions on different platforms. It
> would be better IMO to use maven site plugin directly and/or with scm publish
> if it consistently worked as documented. Maybe a flag isn't even need, maybe
> just fixing maven site plugin to stop going outside of the staging folder
> would be a good step 1 as scm publish should be ok then.
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