Add experimental Kotlin incremental compilation

Author: erikkerber

MODULE.bazel

@@ -12,7 +12,7 @@ bazel_dep(name = "rules_cc", version = "0.0.16")
 bazel_dep(name = "platforms", version = "0.0.11")
 bazel_dep(name = "bazel_skylib", version = "1.7.1")
 bazel_dep(name = "rules_java", version = "8.9.0")
-bazel_dep(name = "rules_python", version = "0.23.1")
+bazel_dep(name = "rules_python", version = "0.37.2")
 bazel_dep(name = "rules_android", version = "0.6.1")
 bazel_dep(name = "bazel_features", version = "1.25.0")
 
@@ -63,9 +63,9 @@ maven.install(
         "com.google.auto.service:auto-service-annotations:1.1.1",
         "com.google.auto.value:auto-value:1.10.1",
         "com.google.auto.value:auto-value-annotations:1.10.1",
-        "com.google.dagger:dagger:2.53.1",
-        "com.google.dagger:dagger-compiler:2.53.1",
-        "com.google.dagger:dagger-producers:2.53.1",
+        "com.google.dagger:dagger:2.56.2",
+        "com.google.dagger:dagger-compiler:2.56.2",
+        "com.google.dagger:dagger-producers:2.56.2",
         "javax.annotation:javax.annotation-api:1.3.2",
         "javax.inject:javax.inject:1",
         "org.apache.commons:commons-compress:1.26.2",
@@ -74,6 +74,7 @@ maven.install(
         "com.squareup.moshi:moshi:1.15.1",
         "com.squareup.moshi:moshi-kotlin:1.15.1",
         "com.squareup.moshi:moshi-kotlin-codegen:1.15.1",
+        "org.jetbrains.kotlin:kotlin-build-tools-impl:2.1.20",
     ],
     fail_if_repin_required = True,
     fetch_sources = True,

kotlin/internal/jvm/compile.bzl

@@ -490,6 +490,8 @@ def _run_kt_builder_action(
     args.add("--strict_kotlin_deps", toolchains.kt.experimental_strict_kotlin_deps)
     args.add_all("--classpath", compile_deps.compile_jars)
     args.add("--reduced_classpath_mode", toolchains.kt.experimental_reduce_classpath_mode)
+    args.add("--build_tools_api", toolchains.kt.experimental_build_tools_api)
+    args.add("--incremental_compilation", toolchains.kt.experimental_incremental_compilation)
     args.add_all("--sources", srcs.all_srcs, omit_if_empty = True)
     args.add_all("--source_jars", srcs.src_jars + generated_src_jars, omit_if_empty = True)
     args.add_all("--deps_artifacts", deps_artifacts, omit_if_empty = True)

kotlin/internal/toolchains.bzl

@@ -91,6 +91,8 @@ def _kotlin_toolchain_impl(ctx):
         experimental_strict_kotlin_deps = ctx.attr.experimental_strict_kotlin_deps,
         experimental_report_unused_deps = ctx.attr.experimental_report_unused_deps,
         experimental_reduce_classpath_mode = ctx.attr.experimental_reduce_classpath_mode,
+        experimental_build_tools_api = ctx.attr.experimental_build_tools_api,
+        experimental_incremental_compilation = ctx.attr.experimental_incremental_compilation,
         javac_options = ctx.attr.javac_options[JavacOptions] if ctx.attr.javac_options else None,
         kotlinc_options = ctx.attr.kotlinc_options[KotlincOptions] if ctx.attr.kotlinc_options else None,
         empty_jar = ctx.file._empty_jar,
@@ -247,6 +249,14 @@ _kt_toolchain = rule(
                 "KOTLINBUILDER_REDUCED",
             ],
         ),
+        "experimental_build_tools_api": attr.bool(
+            doc = "TODO",
+            default = False,
+        ),
+        "experimental_incremental_compilation": attr.bool(
+            doc = "TODO",
+            default = False,
+        ),
         "javac_options": attr.label(
             doc = "Compiler options for javac",
             providers = [JavacOptions],
@@ -321,6 +331,8 @@ def define_kt_toolchain(
         experimental_report_unused_deps = None,
         experimental_reduce_classpath_mode = None,
         experimental_multiplex_workers = None,
+        experimental_build_tools_api = None,
+        experimental_incremental_compilation = None,
         javac_options = Label("//kotlin/internal:default_javac_options"),
         kotlinc_options = Label("//kotlin/internal:default_kotlinc_options"),
         jvm_stdlibs = None,
@@ -349,6 +361,8 @@ def define_kt_toolchain(
         experimental_strict_kotlin_deps = experimental_strict_kotlin_deps,
         experimental_report_unused_deps = experimental_report_unused_deps,
         experimental_reduce_classpath_mode = experimental_reduce_classpath_mode,
+        experimental_build_tools_api = experimental_build_tools_api,
+        experimental_incremental_compilation = experimental_incremental_compilation,
         javac_options = javac_options,
         kotlinc_options = kotlinc_options,
         visibility = ["//visibility:public"],

kotlin/settings/BUILD.bazel

@@ -42,3 +42,15 @@ bool_flag(
     build_setting_default = False,
     visibility = ["//visibility:public"],
 )
+
+bool_flag(
+    name = "experimental_build_tools_api",
+    build_setting_default = False,
+    visibility = ["//visibility:public"],
+)
+
+bool_flag(
+    name = "experimental_incremental_compilation",
+    build_setting_default = False,
+    visibility = ["//visibility:public"],
+)