Gradle provides the built-in dependencies task to render a dependency tree from the command line. By default, the task shows dependencies for all configurations within a single project. The dependency tree shows the selected version of each dependency and provides information on conflict resolution.
The dependencies task is particularly useful for analyzing transitive dependencies. While your build file lists direct dependencies, the task helps you understand which transitive dependencies are resolved during the build.
$ ./gradlew :app:dependencies
> Task :app:dependencies
------------------------------------------------------------
Project ':app'
------------------------------------------------------------
annotationProcessor - Annotation processors and their dependencies for source set 'main'.
No dependencies
compileClasspath - Compile classpath for source set 'main'.
\--- com.fasterxml.jackson.core:jackson-databind:2.17.2
+--- com.fasterxml.jackson.core:jackson-annotations:2.17.2
| \--- com.fasterxml.jackson:jackson-bom:2.17.2
| +--- com.fasterxml.jackson.core:jackson-annotations:2.17.2 (c)
| +--- com.fasterxml.jackson.core:jackson-core:2.17.2 (c)
| \--- com.fasterxml.jackson.core:jackson-databind:2.17.2 (c)
+--- com.fasterxml.jackson.core:jackson-core:2.17.2
| \--- com.fasterxml.jackson:jackson-bom:2.17.2 (*)
\--- com.fasterxml.jackson:jackson-bom:2.17.2 (*)
...The dependencies task marks dependency trees with the following annotations:
(*): Indicates repeated occurrences of a transitive dependency subtree. Gradle expands transitive dependency subtrees only once per project; repeat occurrences only display the root of the subtree, followed by this annotation.
(c): This element is a dependency constraint, not a dependency. Look for the matching dependency elsewhere in the tree.
(n): A dependency or dependency configuration that cannot be resolved.
To focus on a specific dependency configuration, use the optional --configuration parameter.
Like project and task names, Gradle allows abbreviated names for dependency configurations. For example, you can use tRC instead of testRuntimeClasspath, as long as it matches a unique configuration.
The following examples display dependencies for the testRuntimeClasspath configuration in a Java project:
$ gradle -q dependencies --configuration testRuntimeClasspath$ gradle -q dependencies --configuration tRCTo view a list of all configurations in a project, including those provided by plugins, run the resolvableConfigurations report. For more details, refer to the pluginâs documentation, such as the Java Plugin here.
Consider a project that uses the JGit library to execute Source Control Management (SCM) operations for a release process. You can declare dependencies for external tooling with the help of a custom dependency configuration. This avoids polluting other contexts, such as the compilation classpath for your production source code.
The following example declares a custom dependency configuration named scm that contains the JGit dependency:
build.gradle.kts
configurations {
create("scm")
}
dependencies {
"scm"("org.eclipse.jgit:org.eclipse.jgit:4.9.2.201712150930-r")
}build.gradle
configurations {
scm
}
dependencies {
scm 'org.eclipse.jgit:org.eclipse.jgit:4.9.2.201712150930-r'
}Use the following command to view a dependency tree for the scm dependency configuration:
$ gradle -q dependencies --configuration scm
------------------------------------------------------------
Root project 'dependencies-report'
------------------------------------------------------------
scm
\--- org.eclipse.jgit:org.eclipse.jgit:4.9.2.201712150930-r
+--- com.jcraft:jsch:0.1.54
+--- com.googlecode.javaewah:JavaEWAH:1.1.6
+--- org.apache.httpcomponents:httpclient:4.3.6
| +--- org.apache.httpcomponents:httpcore:4.3.3
| +--- commons-logging:commons-logging:1.1.3
| \--- commons-codec:commons-codec:1.6
\--- org.slf4j:slf4j-api:1.7.2
A web-based, searchable dependency report is available by adding the --scan option.
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