Print tree for maven deps

[Aryeh Hillman]

Is there a way to print a dependency tree for maven artifacts?

equivalent for gradle documented here https://docs.gradle.org/current/userguide/viewing_debugging_dependencies.html#example_rendering_the_dependency_report_for_a_custom_configuration

[Alex Humesky]

The general tool for this is bazel query:

https://bazel.build/docs/query-how-to

https://bazel.build/reference/query

So for a build like the one below, you could do:

$ bazel query --output=label_kind --noimplicit_deps --notool_deps "kind(rule, deps('//java/app:App'))"
java_binary rule //java/app:App
java_library rule //java/lib:Lib
java_library rule //java/lib2:Lib2

There might be many kinds of dependencies besides ones from maven. Getting more information than the label might require something like an aspect though, which is more complicated to use, depending on what you need and how you're getting your maven dependencies. To get a graph output, you can do --output=graph, see https://bazel.build/reference/query#display-result-graph

java/app/BUILD:

java_binary(
  name = "App",
  srcs = ["App.java"],
  deps = ["//java/lib:Lib"],
)

java/lib/BUILD:

java_library(
  name = "Lib",
  srcs = ["Lib.java"],
  deps = ["//java/lib2:Lib2"],
  visibility = ["//visibility:public"],
)

java/lib2/BUILD:

java_library(
  name = "Lib2",
  srcs = ["Lib2.java"],
  visibility = ["//visibility:public"],
)

On Fri, Jun 10, 2022 at 7:00 PM 'Aryeh Hillman' via bazel-discuss <bazel-...@googlegroups.com> wrote:

Is there a way to print a dependency tree for maven artifacts?

equivalent for gradle documented here https://docs.gradle.org/current/userguide/viewing_debugging_dependencies.html#example_rendering_the_dependency_report_for_a_custom_configuration

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