Add Rust support to MODULE.bazel

PiperOrigin-RevId: 640804047

.bcr/presubmit.yml

@@ -13,6 +13,7 @@ tasks:
     build_targets:
     - '@protobuf//:protobuf'
     - '@protobuf//:protobuf_lite'
+    - '@protobuf//:protobuf_rust'
     - '@protobuf//:protoc'
     - '@protobuf//:test_messages_proto2_cc_proto'
     - '@protobuf//:test_messages_proto3_cc_proto'

BUILD.bazel

@@ -444,6 +444,16 @@ alias(
     visibility = ["//visibility:public"],
 )
 
+################################################################################
+# Rust support
+################################################################################
+
+alias(
+    name = "protobuf_rust",
+    actual = "//rust:protobuf",
+    visibility = ["//visibility:public"],
+)
+
 ################################################################################
 # Test protos
 ################################################################################

MODULE.bazel

@@ -21,8 +21,25 @@ bazel_dep(name = "rules_java", version = "5.3.5")
 bazel_dep(name = "rules_jvm_external", version = "5.1")
 bazel_dep(name = "rules_pkg", version = "0.7.0")
 bazel_dep(name = "rules_python", version = "0.10.2")
+bazel_dep(name = "rules_rust", version = "0.45.1")
 bazel_dep(name = "platforms", version = "0.0.8")
 bazel_dep(name = "zlib", version = "1.2.11")
 
 # TODO: remove after toolchain types are moved to protobuf
-bazel_dep(name = "rules_proto", version = "4.0.0")
+bazel_dep(name = "rules_proto", version = "4.0.0")
+
+rust = use_extension("@rules_rust//rust:extensions.bzl", "rust")
+rust.toolchain(edition = "2021")
+use_repo(rust, "rust_toolchains")
+register_toolchains("@rust_toolchains//:all")
+crate = use_extension("@rules_rust//crate_universe:extension.bzl", "crate")
+crate.spec(
+    package = "googletest",
+    version = ">0.0.0",
+)
+crate.spec(
+    package = "paste",
+    version = ">=1",
+)
+crate.from_specs()
+use_repo(crate, crate_index = "crates")