The R classes of aar_import targets are not provided in direct dependencies's classpaths

[jin]

As title.

[jin]

Repro:

BUILD:

android_library(
    name = "my_lib",
    srcs = ["Main.java"],
    custom_package = "com.example.bazel",
    deps = [
        artifact("com.android.support:design"),
    ],
    manifest = "LibManifest.xml",
)


android_binary(
    name = "my_app",
    custom_package = "com.example.bazel",
    manifest = "AndroidManifest.xml",
    deps = [
        ":my_lib",
    ],
)

Main.java

package com.example.bazel;

class Main {

  public static void main(String[] args) {
    // does not compile
    // int MyInt = android.support.design.R.string.abc_action_mode_done;

    // compiles
    int MyInt = R.string.abc_action_mode_done; 
  }
}

Error:

ERROR: /usr/local/google/home/jingwen/code/rules_jvm_external/examples/simple/BUILD:3:1: Building libmy_lib2.jar (1 source file) failed (Exit 1)
Main2.java:9: error: package android.support.design.R does not exist
    int MyInt = android.support.design.R.string.abc_action_mode_done;
                                        ^
Target //:my_app failed to build
Use --verbose_failures to see the command lines of failed build steps.

[jin]

The resources are correctly processed into a _resources.jar file:

$ jar tf bazel-out/android-armeabi-v7a-fastbuild/bin/external/maven/com_android_support_design_27_0_2_resources.jar
META-INF/
META-INF/MANIFEST.MF
android/support/design/R$anim.class
android/support/design/R$animator.class
android/support/design/R$attr.class
android/support/design/R$bool.class
android/support/design/R$color.class
android/support/design/R$dimen.class
android/support/design/R$drawable.class
android/support/design/R$id.class
android/support/design/R$integer.class
android/support/design/R$layout.class
android/support/design/R$string.class
android/support/design/R$style.class
android/support/design/R$styleable.class
android/support/design/R.class

but this jar not added to the classpaths of direct dependencies.

[cgruber]

Thanks for reproing this - you beat me to the repro case. This is exactly our issue, and the proposed fix in gerrit is correct, and works for Square internally. Thanks!

[jin]

This will be in 0.26.

[cgruber]

No chance of it being cherry picked into 0.25? It's strictly a bug fix.

[jin]

Cherry-picks are only for newly introduced regressions in the release.

[cgruber]

@jin - Ack.