How to Exclude Specific Transitive Dependencies in Gradle Without Affecting Other Artifacts?

Excluding Specific Transitive Dependencies in Gradle

In Gradle, excluding transitive dependencies is crucial for managing dependencies and optimizing build performance. This question explores how to exclude all instances of a specific transitive dependency, org.slf4j:slf4j-log4j12, while preserving other necessary slf4j artifacts.

Initially, setting an exclusion using runtime.exclude group: "org.slf4j", name: "slf4j-log4j12" inadvertently excluded all slf4j artifacts. To address this, it is necessary to use module instead of name for excluding transitive dependencies, as demonstrated by:

configurations {
  runtime.exclude group: "org.slf4j", module: "slf4j-log4j12"
}

This syntax effectively excludes only the specific slf4j-log4j12 module while allowing other slf4j artifacts to be included.

Furthermore, it is crucial to comprehend the concept of "module" in Gradle. Module corresponds to a particular Maven artifact. Gradle derives the module from the Maven artifacts' groupId and artifactId, following the convention:

[group]:[artifactId]

Therefore, for org.slf4j:slf4j-log4j12, the module is:

org.slf4j:slf4j-log4j12

By specifying the module, Gradle can precisely target and exclude specific transitive dependencies without affecting unrelated artifacts.

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