Bazel: move patching of rules_kotlin to a registry override

.bazelrc

@@ -14,5 +14,8 @@ build:linux --cxxopt=-std=c++20
 build:macos --cxxopt=-std=c++20 --cpu=darwin_x86_64
 build:windows --cxxopt=/std:c++20 --cxxopt=/Zc:preprocessor
 
+common --registry=file://%workspace%/misc/bazel/override_registry
+common --registry=https://bcr.bazel.build
+
 import %workspace%/.bazelrc.exported
 try-import %workspace%/local.bazelrc

MODULE.bazel

@@ -21,14 +21,7 @@ bazel_dep(name = "bazel_skylib", version = "1.5.0")
 bazel_dep(name = "abseil-cpp", version = "20240116.0", repo_name = "absl")
 bazel_dep(name = "nlohmann_json", version = "3.11.3", repo_name = "json")
 bazel_dep(name = "fmt", version = "10.0.0")
-bazel_dep(name = "rules_kotlin", version = "1.9.4")
-
-# we patch `rules_kotlin` to allow passing `-language-version` at a jvm_kt_library level
-single_version_override(
-    module_name = "rules_kotlin",
-    patch_strip = 1,
-    patches = ["//java/kotlin-extractor:rules_kotlin.patch"],
-)
+bazel_dep(name = "rules_kotlin", version = "1.9.4-patched")
 
 pip = use_extension("@rules_python//python/extensions:pip.bzl", "pip")
 pip.parse(

misc/bazel/override_registry/README.md

@@ -0,0 +1,8 @@
+This was taken from https://github.com/bazelbuild/bazel-central-repository and readapted:
+* The latest version was renamed with a `-patched` suffix
+* The above rename was done also in the files:
+   * `modules/rules_kotlin/metadata.json`
+   * `module/rules_kotlin/1.9.4-patched/MODULE.bazel`
+* `modules/rules_kotlin/1.9.4-patched/patches/add_language_version_option.patch` was added
+* the above patch was added in `modules/rules_kotlin/1.9.4-patched/source.json`, with integrity SHAs generated via
+  `echo -n sha256-; cat <file> | openssl dgst -sha256 -binary | base64`.

misc/bazel/override_registry/bazel_registry.json

@@ -0,0 +1,3 @@
+{
+    "mirrors": []
+}

misc/bazel/override_registry/modules/rules_kotlin/1.9.4-patched/MODULE.bazel

@@ -0,0 +1,31 @@
+module(
+    name = "rules_kotlin",
+    version = "1.9.4-patched",
+    repo_name = "rules_kotlin",
+)
+
+bazel_dep(name = "platforms", version = "0.0.6")
+bazel_dep(name = "bazel_skylib", version = "1.4.2")
+bazel_dep(name = "rules_java", version = "7.2.0")
+bazel_dep(name = "rules_python", version = "0.23.1")
+bazel_dep(name = "rules_cc", version = "0.0.8")
+
+rules_kotlin_extensions = use_extension(
+    "//src/main/starlark/core/repositories:bzlmod_setup.bzl",
+    "rules_kotlin_extensions",
+)
+use_repo(
+    rules_kotlin_extensions,
+    "com_github_google_ksp",
+    "com_github_jetbrains_kotlin",
+    "com_github_pinterest_ktlint",
+    "rules_android",
+)
+
+register_toolchains("//kotlin/internal:default_toolchain")
+
+# TODO(bencodes) We should be able to remove this once rules_android has rolled out official Bzlmod support
+remote_android_extensions = use_extension("@bazel_tools//tools/android:android_extensions.bzl", "remote_android_tools_extensions")
+use_repo(remote_android_extensions, "android_gmaven_r8", "android_tools")
+
+bazel_dep(name = "rules_proto", version = "5.3.0-21.7")

misc/bazel/override_registry/modules/rules_kotlin/1.9.4-patched/patches/module_dot_bazel_version.patch

@@ -0,0 +1,12 @@
+===================================================================
+--- a/MODULE.bazel
++++ b/MODULE.bazel
+@@ -1,7 +1,7 @@
+ module(
+     name = "rules_kotlin",
+-    version = "1.9.0",
++    version = "1.9.4",
+     repo_name = "rules_kotlin",
+ )
+ 
+ bazel_dep(name = "platforms", version = "0.0.6")

misc/bazel/override_registry/modules/rules_kotlin/1.9.4-patched/source.json

@@ -0,0 +1,9 @@
+{
+    "integrity": "sha256-dsD8wsI+33NjIK3tGs2d3guuQY5XMd8Skz2IbLqGt5U=",
+    "url": "https://github.com/bazelbuild/rules_kotlin/releases/download/v1.9.4/rules_kotlin-v1.9.4.tar.gz",
+    "patches": {
+        "module_dot_bazel_version.patch": "sha256-8Fu6NiXzckWm8oaVY/rPonGEqWG5ijV0r2GUf7ajKHM=",
+        "add_language_version_option.patch": "sha256-uF6LFpkqe9ye7+avviY1NE5ZhxJ3WMLenS+mbg4XFTM="
+    },
+    "patch_strip": 1
+}

misc/bazel/override_registry/modules/rules_kotlin/metadata.json

@@ -0,0 +1,11 @@
+{
+    "homepage": "https://github.com/bazelbuild/rules_kotlin",
+    "maintainers": [],
+    "repository": [
+        "github:bazelbuild/rules_kotlin"
+    ],
+    "versions": [
+        "1.9.4-patched"
+    ],
+    "yanked_versions": {}
+}