Declare formatter version to avoid spotless choosing a version#681
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MarkEWaite merged 1 commit intojenkinsci:masterfrom Jun 26, 2025
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diffplug/spotless#2503 (comment) indicates that spotless chooses a formatter version based on the JDK running the formatting process. The spotless maintainer recommends that we declare a formatter version explicitly so that the formatter won't change based on the JDK version. Testing done: In this repository: mvn clean install versions:display-plugin-updates In the winstone repository (where we saw the issue): Reverted the change that made the formatting independent of Java version in b95111923002d82598d4d85f67f40fa6170dda5e and then added explicit spotless version definition to the pom file so that I could confirm that changing Java versions does not change the formatting. MarkEWaite/winstone@78ea965 has the details . ~/bin/use_java17 mvn spotless:apply git status . ~/bin/use_java21 mvn spotless:apply git status Matching pull request in plugin pom: * jenkinsci/plugin-pom#1151
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timja
approved these changes
Jun 8, 2025
NotMyFault
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Jun 8, 2025
jglick
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Jun 24, 2025
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Declare formatter version to avoid spotless choosing a version
diffplug/spotless#2503 (comment) indicates that spotless chooses a formatter version based on the JDK running the formatting process. We intentionally run our tests with both JDK 17 and JDK 21. In some source code, that causes source code formatting to fail the build on one JDK version when it passes on the other JDK version.
Examples of the failure and workarounds that have been applied:
Matching pull request in plugin pom:
Testing done
In this repository:
In the winstone repository (where we saw the issue):
Reverted the change that made the formatting independent of Java version in b95111923002d82598d4d85f67f40fa6170dda5e and then added explicit spotless version definition to the pom file so that I could confirm that changing Java versions does not change the formatting.
MarkEWaite/winstone@78ea965 has the details
Submitter checklist