[EXP] Bazel 8 support

.bazelrc

@@ -371,3 +371,5 @@ build:windows --cxxopt='/Zc:__cplusplus' --host_cxxopt='/Zc:__cplusplus'
 # enable clang coverage: https://clang.llvm.org/docs/SourceBasedCodeCoverage.html
 build:clang-coverage --copt="-fprofile-instr-generate" --linkopt="-fprofile-instr-generate"
 build:clang-coverage --copt="-fcoverage-mapping" --linkopt="-fcoverage-mapping"
+
+build --enable_workspace --incompatible_autoload_externally="+@rules_python,+@protobuf,@rules_shell"

.bazelversion

@@ -1 +1,2 @@
-7.3.1
+ed9bbd0e510afce7981f8af5916c034a2476715f
+# last available bazel 8 commit as of 10/25

MODULE.bazel

@@ -0,0 +1 @@
+# We don't use bzlmod at this time, but bazel 8 still expects us to have a MODULE.bazel file.

WORKSPACE

@@ -14,6 +14,54 @@ deps_gen()
 load("@bazel_tools//tools/build_defs/repo:git.bzl", "git_repository")
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive", "http_file")
 
+http_archive(
+    name = "rules_cc",
+    sha256 = "d9bdd3ec66b6871456ec9c965809f43a0901e692d754885e89293807762d3d80",
+    strip_prefix = "rules_cc-0.0.13",
+    urls = ["https://github.com/bazelbuild/rules_cc/releases/download/0.0.13/rules_cc-0.0.13.tar.gz"],
+)
+
+PTAG_NAME = "v28.2"
+
+PURL = "https://github.com/protocolbuffers/protobuf/releases/download/v28.2/protobuf-28.2.tar.gz"
+
+PSTRIP_PREFIX = "protobuf-28.2"
+
+PSHA256 = "b2340aa47faf7ef10a0328190319d3f3bee1b24f426d4ce8f4253b6f27ce16db"
+
+PTYPE = "tgz"
+
+http_archive(
+    name = "protobuf",
+    sha256 = PSHA256,
+    strip_prefix = PSTRIP_PREFIX,
+    type = PTYPE,
+    url = PURL,
+)
+
+http_archive(
+    name = "rules_shell",
+    sha256 = "0d0c56d01c3c40420bf7bf14d73113f8a92fbd9f5cd13205a3b89f72078f0321",
+    strip_prefix = "rules_shell-0.1.1",
+    url = "https://github.com/bazelbuild/rules_shell/releases/download/v0.1.1/rules_shell-v0.1.1.tar.gz",
+)
+
+load("@rules_shell//shell:repositories.bzl", "rules_shell_dependencies", "rules_shell_toolchains")
+
+rules_shell_dependencies()
+
+rules_shell_toolchains()
+
+http_archive(
+    name = "rules_proto",
+    sha256 = "66bfdf8782796239d3875d37e7de19b1d94301e8972b3cbd2446b332429b4df1",
+    strip_prefix = "rules_proto-4.0.0",
+    urls = [
+        "https://mirror.bazel.build/github.com/bazelbuild/rules_proto/archive/refs/tags/4.0.0.tar.gz",
+        "https://github.com/bazelbuild/rules_proto/archive/refs/tags/4.0.0.tar.gz",
+    ],
+)
+
 NODE_VERSION = "20.14.0"
 
 load("@bazel_skylib//:workspace.bzl", "bazel_skylib_workspace")
@@ -53,6 +101,8 @@ load("@rules_python//python:repositories.bzl", "py_repositories", "python_regist
 
 py_repositories()
 
+load("@rules_python//python:py_test.bzl", "py_test")
+
 http_archive(
     name = "com_google_benchmark",
     integrity = "sha256-a8GApX0j1NlRVRn5KwyD1hsFtbqxiJYfNqx7BrDZ6c4=",
@@ -302,6 +352,7 @@ http_archive(
         "//:patches/v8/0018-Update-illegal-invocation-error-message-in-v8.patch",
         "//:patches/v8/0019-Implement-cross-request-context-promise-resolve-hand.patch",
         "//:patches/v8/0020-Modify-where-to-look-for-fast_float-dependency.patch",
+        "//:patches/v8/0021-bazel-Add-missing-imports-needed-with-Bazel-8.patch",
     ],
     strip_prefix = "v8-13.0.245.16",
     url = "https://github.com/v8/v8/archive/refs/tags/13.0.245.16.tar.gz",

build/deps/gen/dep_rules_python.bzl

@@ -2,10 +2,10 @@
 
 load("@//:build/http.bzl", "http_archive")
 
-TAG_NAME = "0.37.0"
-URL = "https://api.github.com/repos/bazelbuild/rules_python/tarball/0.37.0"
-STRIP_PREFIX = "bazelbuild-rules_python-0c0492d"
-SHA256 = "442740dfce802db482633d11302ef0894c2d8641c988aa1aa8f129acccdee2be"
+TAG_NAME = "0.37.1"
+URL = "https://api.github.com/repos/bazelbuild/rules_python/tarball/0.37.1"
+STRIP_PREFIX = "bazelbuild-rules_python-8c3acea"
+SHA256 = "3a71f2ab193743465bbaa3b426028577a35e032f052f67018d284a16a3ce328f"
 TYPE = "tgz"
 
 def dep_rules_python():

patches/v8/0021-bazel-Add-missing-imports-needed-with-Bazel-8.patch

@@ -0,0 +1,19 @@
+From c9688d31cd8e1e8cbb5624f9cee367029d5a728a Mon Sep 17 00:00:00 2001
+From: Felix Hanau <felix@cloudflare.com>
+Date: Sun, 27 Oct 2024 16:49:31 +0000
+Subject: [bazel] Add missing imports needed with Bazel 8
+
+
+diff --git a/BUILD.bazel b/BUILD.bazel
+index 3fa74551420b48f226553ddaa00eb9926a3b009f..5860920e592b2b22d44bbd6a62783fc472e4dcf7 100644
+--- a/BUILD.bazel
++++ b/BUILD.bazel
+@@ -3,7 +3,7 @@
+ # found in the LICENSE file.
+
+ load("@bazel_skylib//lib:selects.bzl", "selects")
+-load("@rules_python//python:defs.bzl", "py_binary")
++load("@rules_python//python:defs.bzl", "py_binary", "py_test")
+ load("@v8_python_deps//:requirements.bzl", "requirement")
+ load(
+     "@v8//:bazel/defs.bzl",

src/workerd/util/BUILD.bazel

@@ -9,17 +9,10 @@ wd_cc_library(
         "perfetto-tracing.h",
         "use-perfetto-categories.h",
     ],
-    defines = select({
-        "@platforms//os:windows": [],
-        "//conditions:default": ["WORKERD_USE_PERFETTO"],
-    }),
     visibility = ["//visibility:public"],
     deps = [
         "@capnp-cpp//src/kj",
-    ] + select({
-        "@platforms//os:windows": [],
-        "//conditions:default": ["@perfetto//:libperfetto_client_experimental"],
-    }),
+    ],
 )
 # TODO(later): Currently perfetto support is not enabled on Windows simply because the
 # perfetto bazel build fails on windows for some reason and it's currently not worth