How to List Gradle's Buildscript / Plugin Dependencies

Similarly to Configure Gradle to Allow Listing All Subproject Dependencies, it can be useful to find out the dependencies that are in use by your Gradle plugins.

Fortunately, there is the buildEnvironment Gradle task that allows us to list the project's buildscript dependencies (output trimmed for brevity):

> Task :buildEnvironment

------------------------------------------------------------
Root project - Spring Security OAuth2 Auto Configuration
------------------------------------------------------------

classpath
+--- io.spring.gradle:spring-build-conventions:0.0.28.RELEASE
|    +--- com.github.ben-manes:gradle-versions-plugin:0.25.0
...
|    +--- gradle.plugin.org.gretty:gretty:2.3.1
|    |    +--- org.gretty:gretty-core:2.3.1
...
|    |    |         \--- org.springframework.boot:spring-boot-dependencies:2.3.0.M4 (*)
|    |    +--- org.springframework.boot:spring-boot-loader-tools:1.5.12.RELEASE -> 2.3.0.M4
|    +--- org.springframework.boot:spring-boot-buildpack-platform:2.3.0.M4
...
|    +--- org.springframework.boot:spring-boot-loader-tools:2.3.0.M4 (*)
|    +--- io.spring.gradle:dependency-management-plugin -> 1.0.9.RELEASE
|    +--- org.apache.commons:commons-compress -> 1.19
|    +--- org.springframework:spring-core -> 5.2.5.RELEASE (*)
|    \--- org.springframework.boot:spring-boot-dependencies:2.3.0.M4 (*)
+--- io.spring.javaformat:spring-javaformat-gradle-plugin:0.0.20 (*)
\--- io.spring.nohttp:nohttp-gradle:0.0.4.RELEASE (*)

(c) - dependency constraint
(*) - dependencies omitted (listed previously)

A web-based, searchable dependency report is available by adding the --scan option.

Deprecated Gradle features were used in this build, making it incompatible with Gradle 7.0.
Use '--warning-mode all' to show the individual deprecation warnings.
See https://docs.gradle.org/6.3/userguide/command_line_interface.html#sec:command_line_warnings

BUILD SUCCESSFUL in 1s
1 actionable task: 1 executed