Add Bazel build configurations for macOS x86_64 CPU runtime and ZLS third‑party integration.

MODULE.bazel

@@ -90,7 +90,7 @@ common_apt_packages = use_extension("//runtimes/common:packages.bzl", "common_ap
 use_repo(common_apt_packages, "libdrm-amdgpu1", "libdrm2", "libelf1", "libnuma1", "libtinfo6", "libzstd1", "zlib1g")
 
 cpu = use_extension("//runtimes/cpu:cpu.bzl", "cpu_pjrt_plugin")
-use_repo(cpu, "libpjrt_cpu_darwin_arm64", "libpjrt_cpu_linux_amd64")
+use_repo(cpu, "libpjrt_cpu_darwin_arm64", "libpjrt_cpu_darwin_amd64", "libpjrt_cpu_linux_amd64")
 
 cuda = use_extension("//runtimes/cuda:cuda.bzl", "cuda_packages")
 use_repo(cuda, "libpjrt_cuda")
@@ -108,7 +108,7 @@ neuron = use_extension("//runtimes/neuron:neuron.bzl", "neuron_packages")
 use_repo(neuron, "aws-neuronx-collectives", "aws-neuronx-runtime-lib")
 
 zls = use_extension("//third_party/zls:zls.bzl", "repo")
-use_repo(zls, "zls_aarch64-macos", "zls_x86_64-linux")
+use_repo(zls, "zls_aarch64-macos", "zls_x86_64-macos", "zls_x86_64-linux")
 
 register_toolchains("//third_party/zls:all")
 
@@ -138,6 +138,7 @@ rust.toolchain(
     edition = "2021",
     extra_target_triples = [
         "aarch64-apple-darwin",
+        "x86_64-apple-darwin",
         "aarch64-unknown-linux-gnu",
         "x86_64-unknown-linux-gnu",
     ],
@@ -154,6 +155,7 @@ crate.from_cargo(
     manifests = ["//zml/tokenizer/hftokenizers:Cargo.toml"],
     supported_platform_triples = [
         "aarch64-apple-darwin",
+        "x86_64-apple-darwin",
         "aarch64-unknown-linux-gnu",
         "x86_64-unknown-linux-gnu",
     ],

platforms/BUILD.bazel

@@ -16,6 +16,15 @@ platform(
     visibility = ["//visibility:public"],
 )
 
+platform(
+    name = "macos_amd64",
+    constraint_values = [
+        "@platforms//cpu:x86_64",
+        "@platforms//os:macos",
+    ],
+    visibility = ["//visibility:public"],
+)
+
 platform(
     name = "macos_arm64",
     constraint_values = [

runtimes/cpu/BUILD.bazel

@@ -1,5 +1,21 @@
 load("@rules_zig//zig:defs.bzl", "zig_library")
 
+config_setting(
+    name = "darwin_arm64",
+    constraint_values = [
+        "@platforms//os:macos",
+        "@platforms//cpu:aarch64",
+    ],
+)
+
+config_setting(
+    name = "darwin_amd64",
+    constraint_values = [
+        "@platforms//os:macos",
+        "@platforms//cpu:x86_64",
+    ],
+)
+
 cc_library(
     name = "empty",
 )
@@ -8,7 +24,8 @@ cc_library(
     name = "libpjrt_cpu",
     defines = ["ZML_RUNTIME_CPU"],
     deps = select({
-        "@platforms//os:macos": ["@libpjrt_cpu_darwin_arm64//:libpjrt_cpu"],
+        ":darwin_arm64": ["@libpjrt_cpu_darwin_arm64//:libpjrt_cpu"],
+        ":darwin_amd64": ["@libpjrt_cpu_darwin_amd64//:libpjrt_cpu"],
         "@platforms//os:linux": ["@libpjrt_cpu_linux_amd64//:libpjrt_cpu"],
     }),
 )

runtimes/cpu/cpu.bzl

@@ -29,6 +29,13 @@ def _cpu_pjrt_plugin_impl(mctx):
         url = "https://github.com/zml/pjrt-artifacts/releases/download/v7.0.0/pjrt-cpu_linux-amd64.tar.gz",
     )
 
+    http_archive(
+        name = "libpjrt_cpu_darwin_amd64",
+        build_file_content = _BUILD_FILE_DEFAULT_VISIBILITY + _BUILD_DARWIN,
+        sha256 = "35af82d9e5c70d16ac15f4c18024a2dd5ed2faefc89940eafe3d5350d2cbd9e7",
+        url = "https://github.com/zml/pjrt-artifacts/releases/download/v7.0.0/pjrt-cpu_darwin-amd64.tar.gz",
+    )
+
     http_archive(
         name = "libpjrt_cpu_darwin_arm64",
         build_file_content = _BUILD_FILE_DEFAULT_VISIBILITY + _BUILD_DARWIN,

third_party/zls/zls.bzl

@@ -10,6 +10,13 @@ _ARCH = {
             "@platforms//cpu:x86_64",
         ],
     ),
+    "x86_64-macos": struct(
+        sha256 = "4b63854d6b76810abd2563706e7d768efc7111e44dd8b371d49198e627697a13",
+        exec_compatible_with = [
+            "@platforms//os:macos",
+            "@platforms//cpu:x86_64",
+        ],
+    ),
     "aarch64-macos": struct(
         sha256 = "dfb627e1f9603583678f552d8035a12dce878215c0a507b32d6f1b9d074d6c4d",
         exec_compatible_with = [