Latest rules_java and rules_android do not work with Bazel 7

[shs96c]

In rules_jvm_external, we are attempting to bump the version of rules_android to 0.7.1 (which supports Bazel 9). This implicitly updates rules_java to version 9.3.0.

Something in this mix is causing this error when we try bazel test //... in the root of rules_jvm_external when using Bazel 7.7.1:

ERROR: Traceback (most recent call last):
        File "/private/var/tmp/_bazel_shs/068e53caf10f6ae803d9aecfac741389/external/rules_java~/java/java_single_jar.bzl", line 89, column 23, in <toplevel>
                java_single_jar = rule(
Error in rule: file '@@rules_java~//java:java_single_jar.bzl' cannot use private API
ERROR: error loading package under directory '': error loading package 'private/tools/java/com/github/bazelbuild/rules_jvm_external/resolver/gradle/plugin': initialization of module 'java/java_single_jar.bzl' failed

This is either a problem in rules_java (likely, because the error message points to the java_single_jar rule) or perhaps rules_android.

To replicate:

git clone https://github.com/shs96c/rules_jvm_external.git
cd rules_jvm_external
git checkout update-deps
bazel build //...

The problem only occurs with Bazel 7.x. Builds appear to work just fine with Bazel 8.x and 9.

Our support policy for rules_jvm_external is LTS-2, so we would like to continue supporting Bazel 7 until Bazel 10 ships.

[FrankPortman]

I am not sure if this requires end users to have the compatibility proxy loaded, or if this can be fixed just in rules_jvm_external, but this could be relevant --->:

in module.bazel:

compat = use_extension("@rules_java//java:rules_java_deps.bzl", "compatibility_proxy")
use_repo(compat, "compatibility_proxy")

in usage:

load("@compatibility_proxy//:proxy.bzl", "JavaInfo", "java_common")

[shs96c]

java_single_jar isn't in the compatibility proxy

[hvadehra]

Sorry for the breakage, fix incoming.