Update workspace configuration to use the toolchains_llvm_bootstrapped toolchain for Zig builds.

MODULE.bazel

@@ -6,7 +6,6 @@ bazel_dep(name = "abseil-cpp", version = "20240722.0.bcr.2")
 bazel_dep(name = "aspect_bazel_lib", version = "2.14.0")
 bazel_dep(name = "aspect_rules_py", version = "1.3.2")
 bazel_dep(name = "bazel_skylib", version = "1.7.1")
-bazel_dep(name = "hermetic_cc_toolchain", version = "3.2.0")
 bazel_dep(name = "libxev", version = "20250313.0-5773f46")
 bazel_dep(name = "patchelf", version = "0.18.0")
 bazel_dep(name = "pcre2", version = "10.43")
@@ -18,8 +17,9 @@ bazel_dep(name = "rules_proto", version = "7.1.0")
 bazel_dep(name = "rules_python", version = "0.40.0")
 bazel_dep(name = "rules_rust", version = "0.60.0")
 bazel_dep(name = "rules_uv", version = "0.65.0")
-bazel_dep(name = "rules_zig", version = "20250519.0-233b207")
+bazel_dep(name = "rules_zig", version = "20250530.0-5084f1f")
 bazel_dep(name = "sentencepiece", version = "20240618.0-d7ace0a")
+bazel_dep(name = "toolchains_llvm_bootstrapped", version = "0.2.3")
 bazel_dep(name = "toolchains_protoc", version = "0.4.1")
 bazel_dep(name = "with_cfg.bzl", version = "0.9.1")
 bazel_dep(name = "xla", version = "20250527.0-cb67f2f")
@@ -54,12 +54,9 @@ register_toolchains("@rules_zig//zig/target:all")
 
 register_toolchains("@zig_toolchains//:all")
 
-toolchains = use_extension("@hermetic_cc_toolchain//toolchain:ext.bzl", "toolchains")
-use_repo(toolchains, "zig_sdk", "zig_sdk-linux-amd64", "zig_sdk-linux-arm64", "zig_sdk-macos-amd64", "zig_sdk-macos-arm64", "zig_sdk-windows-amd64")
-
 register_toolchains(
-    "@zig_sdk//toolchain:linux_amd64_gnu.2.31",
+    "@toolchains_llvm_bootstrapped//toolchain:linux_amd64",
-    "@zig_sdk//toolchain:linux_arm64_gnu.2.31",
+    "@toolchains_llvm_bootstrapped//toolchain:linux_aarch64",
 )
 
 python = use_extension("@rules_python//python/extensions:python.bzl", "python")

MODULE.bazel.lock

@@ -56,7 +56,6 @@
     "https://bazel-registry.zml.ai/modules/googletest/1.14.0.bcr.1/MODULE.bazel": "not found",
     "https://bazel-registry.zml.ai/modules/googletest/1.14.0/MODULE.bazel": "not found",
     "https://bazel-registry.zml.ai/modules/googletest/1.15.2/MODULE.bazel": "not found",
-    "https://bazel-registry.zml.ai/modules/hermetic_cc_toolchain/3.2.0/MODULE.bazel": "not found",
     "https://bazel-registry.zml.ai/modules/jsoncpp/1.9.5/MODULE.bazel": "not found",
     "https://bazel-registry.zml.ai/modules/libpfm/4.11.0/MODULE.bazel": "not found",
     "https://bazel-registry.zml.ai/modules/nlohmann_json/3.6.1/MODULE.bazel": "not found",
@@ -169,10 +168,12 @@
     "https://bazel-registry.zml.ai/modules/stardoc/0.7.1/MODULE.bazel": "not found",
     "https://bazel-registry.zml.ai/modules/stardoc/0.7.2/MODULE.bazel": "not found",
     "https://bazel-registry.zml.ai/modules/swift_argument_parser/1.3.1.1/MODULE.bazel": "not found",
+    "https://bazel-registry.zml.ai/modules/toolchains_llvm_bootstrapped/0.2.3/MODULE.bazel": "not found",
     "https://bazel-registry.zml.ai/modules/toolchains_protoc/0.4.1/MODULE.bazel": "not found",
     "https://bazel-registry.zml.ai/modules/upb/0.0.0-20220923-a547704/MODULE.bazel": "not found",
     "https://bazel-registry.zml.ai/modules/upb/0.0.0-20230516-61a97ef/MODULE.bazel": "not found",
     "https://bazel-registry.zml.ai/modules/with_cfg.bzl/0.9.1/MODULE.bazel": "not found",
+    "https://bazel-registry.zml.ai/modules/with_cfg.bzl/0.9.2/MODULE.bazel": "not found",
     "https://bazel-registry.zml.ai/modules/zlib/1.2.11/MODULE.bazel": "not found",
     "https://bazel-registry.zml.ai/modules/zlib/1.2.13/MODULE.bazel": "not found",
     "https://bazel-registry.zml.ai/modules/zlib/1.3.1.bcr.3/MODULE.bazel": "not found",
@@ -242,8 +243,6 @@
     "https://bcr.bazel.build/modules/googletest/1.14.0/MODULE.bazel": "cfbcbf3e6eac06ef9d85900f64424708cc08687d1b527f0ef65aa7517af8118f",
     "https://bcr.bazel.build/modules/googletest/1.15.2/MODULE.bazel": "6de1edc1d26cafb0ea1a6ab3f4d4192d91a312fd2d360b63adaa213cd00b2108",
     "https://bcr.bazel.build/modules/googletest/1.15.2/source.json": "dbdda654dcb3a0d7a8bc5d0ac5fc7e150b58c2a986025ae5bc634bb2cb61f470",
-    "https://bcr.bazel.build/modules/hermetic_cc_toolchain/3.2.0/MODULE.bazel": "8e7faec81c1f0fb65fe277ecfc75ea3636ce7bf848f88037fedd58e6eeacc28f",
-    "https://bcr.bazel.build/modules/hermetic_cc_toolchain/3.2.0/source.json": "67c2b76edff27c3ec449a935fc9468996d1a730b52a9a6f97c40c8a06d381630",
     "https://bcr.bazel.build/modules/jsoncpp/1.9.5/MODULE.bazel": "31271aedc59e815656f5736f282bb7509a97c7ecb43e927ac1a37966e0578075",
     "https://bcr.bazel.build/modules/jsoncpp/1.9.5/source.json": "4108ee5085dd2885a341c7fab149429db457b3169b86eb081fa245eadf69169d",
     "https://bcr.bazel.build/modules/libpfm/4.11.0/MODULE.bazel": "45061ff025b301940f1e30d2c16bea596c25b176c8b6b3087e92615adbd52902",
@@ -383,12 +382,15 @@
     "https://bcr.bazel.build/modules/stardoc/0.7.2/source.json": "58b029e5e901d6802967754adf0a9056747e8176f017cfe3607c0851f4d42216",
     "https://bcr.bazel.build/modules/swift_argument_parser/1.3.1.1/MODULE.bazel": "5e463fbfba7b1701d957555ed45097d7f984211330106ccd1352c6e0af0dcf91",
     "https://bcr.bazel.build/modules/swift_argument_parser/1.3.1.1/source.json": "32bd87e5f4d7acc57c5b2ff7c325ae3061d5e242c0c4c214ae87e0f1c13e54cb",
+    "https://bcr.bazel.build/modules/toolchains_llvm_bootstrapped/0.2.3/MODULE.bazel": "d367f0e4eb3045ca1245dd59013922b0e82e6d2588c83d4a5691404b23ff305e",
+    "https://bcr.bazel.build/modules/toolchains_llvm_bootstrapped/0.2.3/source.json": "b2ea90900a6398c5d3225bd05b99b7032c7bf6e10d228c7260c7d9720be416f1",
     "https://bcr.bazel.build/modules/toolchains_protoc/0.4.1/MODULE.bazel": "05d6c16474a7a96002dd5512c444aa6965ebcf95f3e0c47001aa18269fbecec9",
     "https://bcr.bazel.build/modules/toolchains_protoc/0.4.1/source.json": "474d926c8e845762faaa42e792fc66cd36794daee4c8af900f673fad0b403a8d",
     "https://bcr.bazel.build/modules/upb/0.0.0-20220923-a547704/MODULE.bazel": "7298990c00040a0e2f121f6c32544bab27d4452f80d9ce51349b1a28f3005c43",
     "https://bcr.bazel.build/modules/upb/0.0.0-20230516-61a97ef/MODULE.bazel": "c0df5e35ad55e264160417fd0875932ee3c9dda63d9fccace35ac62f45e1b6f9",
     "https://bcr.bazel.build/modules/with_cfg.bzl/0.9.1/MODULE.bazel": "5b880a01ab5b3bdb30931075d6b8e58075f999400f7a544632dc7b4a575b3c1e",
-    "https://bcr.bazel.build/modules/with_cfg.bzl/0.9.1/source.json": "c7a183da2500942aeabf32a576ede2c413aa08b6b3bb823a16a623333c061cf9",
+    "https://bcr.bazel.build/modules/with_cfg.bzl/0.9.2/MODULE.bazel": "8008021cb802e87e22b3e2b6f403c0529d4b865703fdcd40e2f36c23a651291c",
+    "https://bcr.bazel.build/modules/with_cfg.bzl/0.9.2/source.json": "06d276bd336d6c9f069d4a68729de4e5d322129665f871c2b328a14b26b7cd99",
     "https://bcr.bazel.build/modules/zlib/1.2.11/MODULE.bazel": "07b389abc85fdbca459b69e2ec656ae5622873af3f845e1c9d80fe179f3effa0",
     "https://bcr.bazel.build/modules/zlib/1.2.13/MODULE.bazel": "aa6deb1b83c18ffecd940c4119aff9567cd0a671d7bba756741cb2ef043a29d5",
     "https://bcr.bazel.build/modules/zlib/1.3.1.bcr.3/MODULE.bazel": "af322bc08976524477c79d1e45e241b6efbeb918c497e8840b8ab116802dda79",

bazel/zig.bzl

@@ -15,7 +15,7 @@ def zig_cc_binary(
     zig_binary(
         name = "{}_lib".format(name),
         kind = BINARY_KIND.static_lib,
-        copts = copts + ["-lc", "-fcompiler-rt"],
+        copts = copts + ["-lc"],
         deps = deps,
         visibility = visibility,
         **kwargs
@@ -45,7 +45,7 @@ def zig_cc_test(
         kind = BINARY_KIND.test_lib,
         test_runner = test_runner,
         tags = tags,
-        copts = copts + ["-lc", "-fcompiler-rt"],
+        copts = copts + ["-lc"],
         deps = deps + [
             "@rules_zig//zig/lib:libc",
         ],

platforms/BUILD.bazel

@@ -1,8 +1,33 @@
+alias(
+    name = "host",
+    actual = select({
+        "@platforms//os:linux": ":host_linux",
+        "//conditions:default": ":host_other",
+    }),
+)
+
+platform(
+    name = "host_other",
+    parents = ["@platforms//host"],
+    visibility = ["//visibility:public"],
+)
+
+
+platform(
+    name = "host_linux",
+    parents = ["@platforms//host"],
+    constraint_values = [
+        "@toolchains_llvm_bootstrapped//constraints/libc:gnu.2.31",
+    ],
+    visibility = ["//visibility:public"],
+)
+
 platform(
     name = "linux_amd64",
     constraint_values = [
         "@platforms//cpu:x86_64",
         "@platforms//os:linux",
+        "@toolchains_llvm_bootstrapped//constraints/libc:gnu.2.31",
     ],
     visibility = ["//visibility:public"],
 )
@@ -12,6 +37,7 @@ platform(
     constraint_values = [
         "@platforms//cpu:aarch64",
         "@platforms//os:linux",
+        "@toolchains_llvm_bootstrapped//constraints/libc:gnu.2.31",
     ],
     visibility = ["//visibility:public"],
 )

third_party/modules/rules_zig/20250530.0-5084f1f/MODULE.bazel

@@ -0,0 +1,68 @@
+module(
+    name = "rules_zig",
+    version = "20250530.0-5084f1f",
+    compatibility_level = 1,
+)
+
+bazel_dep(name = "aspect_bazel_lib", version = "2.8.1")
+bazel_dep(name = "bazel_skylib", version = "1.7.1")
+bazel_dep(name = "platforms", version = "0.0.10")
+
+zig = use_extension("//zig:extensions.bzl", "zig")
+zig.index(file = "//zig/private:versions.json")
+use_repo(zig, "zig_toolchains")
+
+register_toolchains("@rules_zig//zig/target:all")
+
+register_toolchains("@zig_toolchains//:all")
+
+zig_dev = use_extension(
+    "//zig:extensions.bzl",
+    "zig",
+    dev_dependency = True,
+)
+zig_dev.toolchain(zig_version = "0.13.0")
+zig_dev.toolchain(zig_version = "0.12.1")
+zig_dev.toolchain(zig_version = "0.12.0")
+zig_dev.toolchain(zig_version = "0.11.0")
+
+bazel_dep(name = "rules_cc", version = "0.0.9")
+bazel_dep(name = "stardoc", version = "0.7.0", dev_dependency = True, repo_name = "io_bazel_stardoc")
+bazel_dep(name = "gazelle", version = "0.38.0", dev_dependency = True, repo_name = "bazel_gazelle")
+bazel_dep(name = "bazel_skylib_gazelle_plugin", version = "1.7.1", dev_dependency = True)
+bazel_dep(
+    name = "buildifier_prebuilt",
+    version = "7.3.1",
+    dev_dependency = True,
+)
+bazel_dep(name = "rules_multirun", version = "0.9.0", dev_dependency = True)
+bazel_dep(name = "rules_python", version = "0.35.0", dev_dependency = True)
+bazel_dep(
+    name = "rules_bazel_integration_test",
+    version = "0.25.0",
+    dev_dependency = True,
+)
+
+bazel_binaries = use_extension(
+    "@rules_bazel_integration_test//:extensions.bzl",
+    "bazel_binaries",
+    dev_dependency = True,
+)
+
+# NOTE: Keep in sync with WORKSPACE.
+bazel_binaries.download(version_file = "//:.bazelversion")
+bazel_binaries.download(version = "7.0.0")
+use_repo(
+    bazel_binaries,
+    "bazel_binaries",
+    "bazel_binaries_bazelisk",
+    "build_bazel_bazel_.bazelversion",
+    "build_bazel_bazel_7_0_0",
+)
+
+# TODO[AH] Should be an implicit transitive dependency through rules_bazel_integration_test.
+# However, if we do not include it explicitly, then the runfiles resolution for
+# cgrindel_bazel_starlib/shlib/lib/message.sh fails in
+# rules_bazel_integration_test/tools/update_deleted_packages.sh when invoked
+# through the rules_multirun target //util:update.
+bazel_dep(name = "cgrindel_bazel_starlib", version = "0.21.0", dev_dependency = True)

third_party/modules/rules_zig/20250530.0-5084f1f/source.json

@@ -0,0 +1,5 @@
+{
+    "strip_prefix": "rules_zig-5084f1f3a151dfc697900274c19813a4260217c6",
+    "url": "https://github.com/zml/rules_zig/archive/5084f1f3a151dfc697900274c19813a4260217c6.tar.gz",
+    "integrity": "sha256-KpZkIDnKG0sXtRhsE0SDoj3QeeHRKQCRjm6LzxmueRA="
+}