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https://issues.apache.org/jira/browse/GROOVY-8806?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16640113#comment-16640113
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Roberto Perez Alcolea commented on GROOVY-8806:
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Thanks [~paulk]
Is there a open Roadmap where we can see potential release dates for this?
Really appreciate the quick fix! this will save thousands of gradle builds!
> Immutable classes break in groovy 2.5.2
> ---------------------------------------
>
> Key: GROOVY-8806
> URL: https://issues.apache.org/jira/browse/GROOVY-8806
> Project: Groovy
> Issue Type: Bug
> Affects Versions: 2.5.2
> Reporter: Roberto Perez Alcolea
> Assignee: Paul King
> Priority: Major
> Fix For: 3.0.0-alpha-4, 2.5.3
>
>
> We've being running tests of gradle plugins with latest gradle nightly
> release which upgraded to groovy 2.5.2
> Since then, we've seen multiple plugins breaking with errors around
> immutability:
>
> {code:java}
> > Unsupported type (org.ajoberstar.grgit.Branch) found for field
> > 'trackingBranch' while constructing immutable class
> > org.ajoberstar.grgit.Branch.
> Immutable classes only support properties with effectively immutable types
> including:
> - Strings, primitive types, wrapper types, Class, BigInteger and BigDecimal,
> enums
> - classes annotated with @KnownImmutable and known immutables
> (java.awt.Color, java.net.URI)
> - Cloneable classes, collections, maps and arrays, and other classes with
> special handling
> (java.util.Date and various java.time.* classes and interfaces)
> Other restrictions apply, please see the groovydoc for ImmutableOptions for
> further details{code}
>
> I was wondering if this change is related to
> [https://github.com/apache/groovy/commit/3471f55ea5839ab3c9dfa51cdca081bc7b4c020e#diff-8f745c460bc1abf332f21067b21ec551R754]
>
>
> And also, looks like gradle plugins that use the gradleApi and are compiled
> with groovy 2.4 could break with groovy 2.5 with usages like this one
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