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https://issues.apache.org/jira/browse/SOLR-15455?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17419656#comment-17419656
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Dawid Weiss commented on SOLR-15455:
------------------------------------

So, here's an experiment with the composite build approach:
https://github.com/apache/solr/pull/304

If you put a git repo checkout under lucene/main, it'll be sucked in 
automatically. I tried this with the main branch (of lucene) and things seem to 
work fine - I get compilation errors because of incompatible source changes (so 
it seems to work!). However, when I backtrack to  Lucene commit 93844d384623, 
which is 9.0.0-prelease5, I get an incompatible gradle error:
{code}
>gradlew -p solr\core test --tests BasicFunctionalityTest

FAILURE: Build failed with an exception.

* Where:
Script 
'C:\Work\apache\solr\main\lucene\main\gradle\validation\check-environment.gradle'
 line: 44

* What went wrong:
A problem occurred evaluating script.
> Gradle 6.8.3 is required (hint: use the gradlew script): this gradle is 
> Gradle 7.2
{code}

As long as gradle version is consistent, this is, I think, the best approach - 
I know IntelliJ supports it in a fantastic way (no need to compile/publish 
intermediate JARs, things just work), don't know about Eclipse (feel free to 
try!).

Gradle incompatibility is a showstopper here - it's not about just versions but 
also about incompatible build changes... 

I may explore the dependency substitution a bit more but it'll have to be next 
week. Unless the above is fine - it'd require bringing Solr up to speed with 
lucene/main though (so that gradle versions are aligned).

> Facilitate joint Lucene/Solr local development workflow
> -------------------------------------------------------
>
>                 Key: SOLR-15455
>                 URL: https://issues.apache.org/jira/browse/SOLR-15455
>             Project: Solr
>          Issue Type: Improvement
>          Components: Build
>    Affects Versions: main (9.0)
>            Reporter: Michael Gibney
>            Priority: Minor
>         Attachments: solr-lucene-snapshot-build.patch
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> The recommended local development workflow for joint Lucene/Solr development 
> post-TLP split requires some changes in order to work properly. The necessary 
> changes are few, but there's also some opportunity (with minimal changes) to 
> further ease the path for developers. This issue should also encompass 
> documentation of the recommended workflow.
> Continued from a solr-dev [mailing list 
> thread|https://mail-archives.apache.org/mod_mbox/solr-dev/202106.mbox/%3ccajrvfdryqu+hbzdiimaxtsab2e4nyeais-3sfzw6v3zv3gy...@mail.gmail.com%3e].



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