Fix missing plugin inputs (bazelbuild#318)

kotlin/internal/jvm/compile.bzl

@@ -225,6 +225,7 @@ def kt_jvm_compile_action(ctx, rule_kind, output_jar):
     friend = _compiler_friends(ctx, friends = getattr(ctx.attr, "friends", []))
     compile_deps = _compiler_deps(toolchains, friend, deps = ctx.attr.deps + ctx.attr.plugins)
     annotation_processors = _plugin_mappers.targets_to_annotation_processors(ctx.attr.plugins + ctx.attr.deps)
+    transitive_runtime_jars = _plugin_mappers.targets_to_transitive_runtime_jars(ctx.attr.plugins + ctx.attr.deps)
     plugins = ctx.attr.plugins
 
     _run_kt_builder_action(
@@ -236,6 +237,7 @@ def kt_jvm_compile_action(ctx, rule_kind, output_jar):
         friend = friend,
         compile_deps = compile_deps,
         annotation_processors = annotation_processors,
+        transitive_runtime_jars = transitive_runtime_jars,
         plugins = plugins,
         outputs = {
             "output": output_jar,
@@ -271,7 +273,7 @@ def kt_jvm_compile_action(ctx, rule_kind, output_jar):
         ),
     )
 
-def _run_kt_builder_action(ctx, rule_kind, toolchains, dirs, srcs, friend, compile_deps, annotation_processors, plugins, outputs):
+def _run_kt_builder_action(ctx, rule_kind, toolchains, dirs, srcs, friend, compile_deps, annotation_processors, transitive_runtime_jars, plugins, outputs):
     """Creates a KotlinBuilder action invocation."""
     args = _utils.init_args(ctx, rule_kind, friend.module_name)
 
@@ -325,7 +327,9 @@ def _run_kt_builder_action(ctx, rule_kind, toolchains, dirs, srcs, friend, compi
 
     ctx.actions.run(
         mnemonic = "KotlinCompile",
-        inputs = depset(ctx.files.srcs, transitive = [compile_deps.compile_jars]),
+        inputs = depset(
+            ctx.files.srcs,
+            transitive = [compile_deps.compile_jars, transitive_runtime_jars]),
         tools = tools,
         input_manifests = input_manifests,
         outputs = [f for f in outputs.values()],

kotlin/internal/jvm/jvm.bzl

@@ -187,6 +187,7 @@ _common_attr = utils.add_dicts(
             default = [],
             aspects = [_kt_jvm_plugin_aspect],
             providers = [JavaInfo],
+            cfg = "host",
         ),
         "module_name": attr.string(
             doc = """The name of the module, if not provided the module name is derived from the label. --e.g.,

kotlin/internal/jvm/plugins.bzl

@@ -20,10 +20,11 @@ KtJvmPluginInfo = provider(
     doc = "This provider contains the plugin info for the JVM aspect",
     fields = {
         "annotation_processors": "depset of structs containing annotation processor definitions",
+        "transitive_runtime_jars": "depset of transitive_runtime_jars for this plugin and deps",
     },
 )
 
-_EMPTY_PLUGIN_INFO = [KtJvmPluginInfo(annotation_processors = depset())]
+_EMPTY_PLUGIN_INFO = [KtJvmPluginInfo(annotation_processors = depset(), transitive_runtime_jars = depset())]
 
 # Mapping functions for args.add_all.
 # These preserve the transitive depsets until needed.
@@ -36,11 +37,15 @@ def _kt_plugin_to_processorpath(processor):
 def _targets_to_annotation_processors(targets):
     return depset(transitive = [t[KtJvmPluginInfo].annotation_processors for t in targets if t[KtJvmPluginInfo]])
 
+def _targets_to_transitive_runtime_jars(targets):
+    return depset(transitive = [t[KtJvmPluginInfo].transitive_runtime_jars for t in targets if t[KtJvmPluginInfo]])
+
 def _targets_to_plugins(targets):
     return depset(transitive = [t[KtJvmPluginInfo].plugins for t in targets if t[KtJvmPluginInfo]])
 
 mappers = struct(
     targets_to_annotation_processors = _targets_to_annotation_processors,
+    targets_to_transitive_runtime_jars = _targets_to_transitive_runtime_jars,
     kt_plugin_to_processor = _kt_plugin_to_processor,
     kt_plugin_to_processorpath = _kt_plugin_to_processorpath,
 )
@@ -51,6 +56,7 @@ def merge_plugin_infos(attrs):
         A KtJvmPluginInfo provider, Each of the entries is serializable."""
     return KtJvmPluginInfo(
         annotation_processors = _targets_to_annotation_processors(attrs),
+        transitive_runtime_jars = _targets_to_transitive_runtime_jars(attrs),
     )
 
 def _kt_jvm_plugin_aspect_impl(target, ctx):
@@ -66,6 +72,7 @@ def _kt_jvm_plugin_aspect_impl(target, ctx):
                     generates_api = processor.generates_api,
                 ),
             ]),
+            transitive_runtime_jars = depset(transitive = [merged_deps.transitive_runtime_jars]),
         )]
     elif ctx.rule.kind == "java_library":
         return [merge_plugin_infos(ctx.rule.attr.exported_plugins)]