[GitHub] [solr] dweiss commented on pull request #501: Dynamically discover lucene version for use in build

[GitBox <gi...@apache.org>]

dweiss commented on pull request #501:
URL: https://github.com/apache/solr/pull/501#issuecomment-1008589424


   > So now I try to just pull it from versions.props, and that works.
   
   In short: no. If you plan to extract Lucene version/ dependency version from within the build file then you should be using getVersion("artifact coordinates") - this will work. But this method can be used at build execution time only so sometimes you have to resort to using providers. An example is in icu.gradle in Lucene:
   ```
     // Resolve version lazily (can't resolve at configuration time).
     def icu4jVersionProvider = project.provider { getVersion('com.ibm.icu', 'icu4j') } 
   ```


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