bzlmod: patch v8 to allow for bazel_dep usage

Signed-off-by: Matt Leon <mattleon@google.com>

Author: leonm1

MODULE.bazel

@@ -114,17 +114,24 @@ llvm_configure(
 )
 
 # V8 runtime and its dependencies
-v8 = use_extension("//bazel:extensions.bzl", "v8")
-use_repo(v8, "v8")
-
-pip = use_extension("@rules_python//python/extensions:pip.bzl", "pip")
-pip.parse(
-    extra_pip_args = ["--require-hashes"],
-    hub_name = "v8_python_deps",
-    python_version = "3.11",
-    requirements_lock = "@v8//:bazel/requirements.txt",
+bazel_dep(name = "v8", version = "0.0.0")
+archive_override(
+    module_name = "v8",
+    integrity = "sha256-igwEEi6kcb2q7EodzjJasjCx/6LRMiFTVWfDKcNB+Xw=",
+    patch_cmds = [
+        "find ./src ./include -type f -exec sed -i.bak -e 's!#include \"third_party/simdutf/simdutf.h\"!#include \"simdutf.h\"!' {} \\;",
+        "find ./src ./include -type f -exec sed -i.bak -e 's!#include \"third_party/fp16/src/include/fp16.h\"!#include \"fp16.h\"!' {} \\;",
+        "find ./src ./include -type f -exec sed -i.bak -e 's!#include \"third_party/dragonbox/src/include/dragonbox/dragonbox.h\"!#include \"dragonbox/dragonbox.h\"!' {} \\;",
+        "find ./src ./include -type f -exec sed -i.bak -e 's!#include \"third_party/fast_float/src/include/fast_float/!#include \"fast_float/!' {} \\;",
+    ],
+    patch_strip = 1,
+    patches = [
+        "@proxy_wasm_cpp_host//bazel/external:v8.patch",
+        "@proxy_wasm_cpp_host//bazel/external:v8_module_bazel.patch"
+    ],
+    strip_prefix = "v8-14.4.258.16",
+    urls = ["https://github.com/v8/v8/archive/refs/tags/14.4.258.16.tar.gz"],
 )
-use_repo(pip, "v8_python_deps")
 
 # WasmEdge runtime
 wasmedge = use_extension("//bazel:extensions.bzl", "wasmedge")

MODULE.bazel.lock

@@ -118,78 +118,6 @@ wamr_jit_deps = module_extension(
     implementation = _wamr_jit_deps_impl,
 )
 
-def _v8_impl(ctx):
-    # V8 supporting dependencies. Some of these repositories are possible to
-    # use with bazel_dep. All V8 dependencies are listed here for ease of maintenance.
-    http_archive(
-        name = "highway",
-        sha256 = "7e0be78b8318e8bdbf6fa545d2ecb4c90f947df03f7aadc42c1967f019e63343",
-        urls = ["https://github.com/google/highway/archive/refs/tags/1.2.0.tar.gz"],
-        strip_prefix = "highway-1.2.0",
-    )
-    http_archive(
-        name = "fast_float",
-        sha256 = "d2a08e722f461fe699ba61392cd29e6b23be013d0f56e50c7786d0954bffcb17",
-        urls = ["https://github.com/fastfloat/fast_float/archive/refs/tags/v7.0.0.tar.gz"],
-        strip_prefix = "fast_float-7.0.0",
-    )
-    http_archive(
-        name = "dragonbox",
-        urls = ["https://github.com/jk-jeon/dragonbox/archive/6c7c925b571d54486b9ffae8d9d18a822801cbda.zip"],
-        strip_prefix = "dragonbox-6c7c925b571d54486b9ffae8d9d18a822801cbda",
-        sha256 = "2f10448d665355b41f599e869ac78803f82f13b070ce7ef5ae7b5cceb8a178f3",
-        build_file = "@proxy_wasm_cpp_host//bazel/external:dragonbox.BUILD",
-    )
-    http_archive(
-        name = "fp16",
-        urls = ["https://github.com/Maratyszcza/FP16/archive/0a92994d729ff76a58f692d3028ca1b64b145d91.zip"],
-        strip_prefix = "FP16-0a92994d729ff76a58f692d3028ca1b64b145d91",
-        sha256 = "e66e65515fa09927b348d3d584c68be4215cfe664100d01c9dbc7655a5716d70",
-        build_file = "@proxy_wasm_cpp_host//bazel/external:fp16.BUILD",
-    )
-    http_archive(
-        name = "simdutf",
-        sha256 = "512374f8291d3daf102ccd0ad223b1a8318358f7c1295efd4d9a3abbb8e4b6ff",
-        urls = ["https://github.com/simdutf/simdutf/releases/download/v7.3.0/singleheader.zip"],
-        build_file = "@proxy_wasm_cpp_host//bazel/external:simdutf.BUILD",
-    )
-    http_archive(
-        name = "intel_ittapi",
-        strip_prefix = "ittapi-a3911fff01a775023a06af8754f9ec1e5977dd97",
-        sha256 = "1d0dddfc5abb786f2340565c82c6edd1cff10c917616a18ce62ee0b94dbc2ed4",
-        urls = ["https://github.com/intel/ittapi/archive/a3911fff01a775023a06af8754f9ec1e5977dd97.tar.gz"],
-        build_file = "@proxy_wasm_cpp_host//bazel/external: intel_ittapi.BUILD",
-    )
-
-    # V8 is present in bazel central repository, however, as of 2026-01-20 does
-    # not enumerate all of its dependencies, and the bazel_dep version of V8
-    # cannot depend on repositories declared in extensions. Instead, import V8
-    # via extension.
-    http_archive(
-        name = "v8",
-        urls = ["https://github.com/v8/v8/archive/refs/tags/14.4.258.16.tar.gz"],
-        integrity = "sha256-igwEEi6kcb2q7EodzjJasjCx/6LRMiFTVWfDKcNB+Xw=",
-        strip_prefix = "v8-14.4.258.16",
-        patches = [
-            "@proxy_wasm_cpp_host//bazel/external:v8.patch",
-        ],
-        patch_strip = 1,
-        patch_cmds = [
-            "find ./src ./include -type f -exec sed -i.bak -e 's!#include \"third_party/simdutf/simdutf.h\"!#include \"simdutf.h\"!' {} \\;",
-            "find ./src ./include -type f -exec sed -i.bak -e 's!#include \"third_party/fp16/src/include/fp16.h\"!#include \"fp16.h\"!' {} \\;",
-            "find ./src ./include -type f -exec sed -i.bak -e 's!#include \"third_party/dragonbox/src/include/dragonbox/dragonbox.h\"!#include \"dragonbox/dragonbox.h\"!' {} \\;",
-            "find ./src ./include -type f -exec sed -i.bak -e 's!#include \"third_party/fast_float/src/include/fast_float/!#include \"fast_float/!' {} \\;",
-        ],
-    )
-    return ctx.extension_metadata(
-        root_module_direct_deps = ["v8"],
-        root_module_direct_dev_deps = [],
-    )
-
-v8 = module_extension(
-    implementation = _v8_impl,
-)
-
 def _wasmedge_impl(ctx):
     http_archive(
         name = "com_github_wasmedge_wasmedge",

bazel/extensions.bzl

@@ -136,7 +136,7 @@ index 05630ab7035..7f14a987148 100644
          "@fast_float//:fast_float",
 -        ":lib_fp16",
 -        ":simdutf",
-+        "@fp16//:FP16",
++        "@fp16//:fp16",
 +        "@simdutf//:simdutf",
          ":v8_libbase",
          "@abseil-cpp//absl/container:btree",