Cross-project property lookups are incompatible with Gradle isolated projects

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#225 opened on Jun 14, 2026 0 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 3/5
Estimated time: 1-2 days
Newbie friendliness: 55/100

Issue type: Bug
Clarity: Mostly clear
Activity status: Quiet
Tech stack: java
Domain: build-system

Research direction

Start with src/main/java/com/diffplug/gradle/GoomphCacheLocations.java at line 56 in GoomphCacheLocations.initFromProject(Project), then reproduce the failure with Gradle isolated projects enabled. Read the linked Gradle issue and its migration guidance, and verify the plugin no longer triggers the cross-project dynamic property lookup error.

Written by the indexing model from the issue text.

Description

Gradle isolated projects restrict how one (sub)project can access mutable state in another (sub)project. Version 4.4.1 of the com.diffplug.eclipse.mavencentral plugin violates these restrictions. Attempting to use this plugin with isolated projects enabled results in errors like the following:

- Plugin 'com.diffplug.eclipse.mavencentral': Project ':xxx:yyy:zzz' cannot dynamically look up a property in the parent project ':xxx:yyy'

Using a stack trace for additional context reveals that the problematic code is at GoomphCacheLocations.java:56 in com.diffplug.gradle. GoomphCacheLocations. initFromProject(Project):

https://github.com/diffplug/goomph/blob/7e7e41cd68c100ff1e6efdc8010bf8e60b7500a7/src/main/java/com/diffplug/gradle/GoomphCacheLocations.java#L56

See also related discussion in gradle/gradle#36998. Note especially this comment near the very end that "We are getting rid of the Project.getProperties() method."

Dominant language: Java
Stars: 137
Forks: 33
PR merge metrics: No merged PRs in 30d

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