Avoid creating JPMS module jars for now

As we move to using rules_jvm_external, we will encounter some hiccups
with modules provided by third parties. Skirt around that by disabling
JPMS module generation for now.

java/private/maven_artifacts.bzl

@@ -6,37 +6,37 @@ def _maven_artifacts_impl(ctx):
     info = target[MavenInfo]
 
     # Merge together all the binary jars
-    temp_bin_jar = ctx.actions.declare_file("%s-temp.jar" % ctx.attr.name)
-    combine_jars(ctx, ctx.executable._singlejar, info.artifact_jars.to_list(), temp_bin_jar)
+    bin_jar = ctx.outputs.binjar
+    combine_jars(ctx, ctx.executable._singlejar, info.artifact_jars.to_list(), bin_jar)
     src_jar = ctx.outputs.srcjar
     combine_jars(ctx, ctx.executable._singlejar, info.source_jars.to_list(), src_jar)
 
-    # Now generate the module info
-    module_jar = ctx.actions.declare_file("%s-module.jar" % ctx.attr.name)
-
-    args = ctx.actions.args()
-    args.add_all(["--coordinates", ctx.attr.maven_coordinates])
-    args.add_all(["--in", temp_bin_jar.path])
-    args.add_all(["--out", module_jar.path])
-    if len(ctx.attr.module_uses_services) > 0:
-        args.add_all(ctx.attr.module_uses_services, before_each = "--uses")
-
-    paths = [file.path for file in target[GatheredJavaModuleInfo].module_jars.to_list()]
-    if len(paths) > 0:
-        args.add_all(["--module-path", ctx.host_configuration.host_path_separator.join(paths)])
-    if len(ctx.attr.module_exclude_patterns) > 0:
-        args.add_all(ctx.attr.module_exclude_patterns, before_each = "--exclude")
-
-    ctx.actions.run(
-        mnemonic = "BuildModuleJar",
-        inputs = [temp_bin_jar] + target[GatheredJavaModuleInfo].module_jars.to_list(),
-        outputs = [module_jar],
-        executable = ctx.executable._generate_module,
-        arguments = [args],
-    )
-
-    # Now merge the module info and the binary jars
-    combine_jars(ctx, ctx.executable._singlejar, [temp_bin_jar, module_jar], ctx.outputs.binjar)
+#    # Now generate the module info
+#    module_jar = ctx.actions.declare_file("%s-module.jar" % ctx.attr.name)
+#
+#    args = ctx.actions.args()
+#    args.add_all(["--coordinates", ctx.attr.maven_coordinates])
+#    args.add_all(["--in", temp_bin_jar.path])
+#    args.add_all(["--out", module_jar.path])
+#    if len(ctx.attr.module_uses_services) > 0:
+#        args.add_all(ctx.attr.module_uses_services, before_each = "--uses")
+#
+#    paths = [file.path for file in target[GatheredJavaModuleInfo].module_jars.to_list()]
+#    if len(paths) > 0:
+#        args.add_all(["--module-path", ctx.host_configuration.host_path_separator.join(paths)])
+#    if len(ctx.attr.module_exclude_patterns) > 0:
+#        args.add_all(ctx.attr.module_exclude_patterns, before_each = "--exclude")
+#
+#    ctx.actions.run(
+#        mnemonic = "BuildModuleJar",
+#        inputs = [temp_bin_jar] + target[GatheredJavaModuleInfo].module_jars.to_list(),
+#        outputs = [module_jar],
+#        executable = ctx.executable._generate_module,
+#        arguments = [args],
+#    )
+#
+#    # Now merge the module info and the binary jars
+#    combine_jars(ctx, ctx.executable._singlejar, [temp_bin_jar, module_jar], ctx.outputs.binjar)
 
     defaultInfo = target[DefaultInfo]