ci/buildifier: Install and run with bazel (+update bazel -> 5.4.0)

.bazelversion

@@ -1 +1 @@
-5.2.0
+5.4.0

.github/workflows/format.yml

@@ -66,17 +66,10 @@ jobs:
     steps:
     - uses: actions/checkout@v2
 
-    - uses: actions/setup-go@v2
-      with:
-        go-version: '^1.16'
-
-    - name: Install dependencies
-      run: |
-        go install github.com/bazelbuild/buildtools/buildifier@latest
-        echo "$(go env GOPATH)/bin" >> "$GITHUB_PATH"
-
     - name: Format (buildifier)
-      run: find . -name "WORKSPACE" -o -name "*BUILD*" -o -name "*.bzl" | xargs -n1 buildifier -mode=check
+      run: |
+        BAZEL_FILES="$(find . -name "WORKSPACE" -o -name "*BUILD*" -o -name "*.bzl" | xargs -I{} echo ${PWD}/{})"
+        bazel run @com_github_bazelbuild_buildtools//buildifier -- --mode=check ${BAZEL_FILES}
 
   cargo_raze:
     name: check format with cargo-raze

bazel/dependencies.bzl

@@ -12,19 +12,29 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+load("@bazel_gazelle//:deps.bzl", "gazelle_dependencies")
 load("@bazel-zig-cc//toolchain:defs.bzl", zig_register_toolchains = "register_toolchains")
 load("@com_google_protobuf//:protobuf_deps.bzl", "protobuf_deps")
+load("@io_bazel_rules_go//go:deps.bzl", "go_rules_dependencies")
 load("@proxy_wasm_cpp_host//bazel/cargo/wasmsign:crates.bzl", "wasmsign_fetch_remote_crates")
 load("@proxy_wasm_cpp_host//bazel/cargo/wasmtime:crates.bzl", "wasmtime_fetch_remote_crates")
 load("@rules_foreign_cc//foreign_cc:repositories.bzl", "rules_foreign_cc_dependencies")
 load("@rules_fuzzing//fuzzing:init.bzl", "rules_fuzzing_init")
 load("@rules_fuzzing//fuzzing:repositories.bzl", "rules_fuzzing_dependencies")
 load("@rules_python//python:pip.bzl", "pip_install")
 load("@rules_rust//rust:repositories.bzl", "rust_repositories", "rust_repository_set")
+load("@io_bazel_rules_go//go:deps.bzl", "go_register_toolchains")
 
-def proxy_wasm_cpp_host_dependencies():
+GO_VERSION = "1.20.3"
+
+# Set go_version=host to use host go
+def proxy_wasm_cpp_host_dependencies(go_version = GO_VERSION):
     # Bazel extensions.
 
+    go_rules_dependencies()
+    go_register_toolchains(version = go_version)
+    gazelle_dependencies()
+
     rules_foreign_cc_dependencies()
 
     rules_fuzzing_dependencies()

bazel/repositories.bzl

@@ -19,6 +19,34 @@ load("@bazel_tools//tools/build_defs/repo:utils.bzl", "maybe")
 def proxy_wasm_cpp_host_repositories():
     # Bazel extensions.
 
+    maybe(
+        http_archive,
+        name = "io_bazel_rules_go",
+        sha256 = "80a98277ad1311dacd837f9b16db62887702e9f1d1c4c9f796d0121a46c8e184",
+        urls = [
+            "https://mirror.bazel.build/github.com/bazelbuild/rules_go/releases/download/v0.46.0/rules_go-v0.46.0.zip",
+            "https://github.com/bazelbuild/rules_go/releases/download/v0.46.1/rules_go-v0.46.0.zip",
+        ],
+    )
+
+    maybe(
+        http_archive,
+        name = "bazel_gazelle",
+        sha256 = "32938bda16e6700063035479063d9d24c60eda8d79fd4739563f50d331cb3209",
+        urls = [
+            "https://mirror.bazel.build/github.com/bazelbuild/bazel-gazelle/releases/download/v0.35.0/bazel-gazelle-v0.35.0.tar.gz",
+            "https://github.com/bazelbuild/bazel-gazelle/releases/download/v0.35.0/bazel-gazelle-v0.35.0.tar.gz",
+        ],
+    )
+
+    maybe(
+        http_archive,
+        name = "com_github_bazelbuild_buildtools",
+        urls = ["https://github.com/bazelbuild/buildtools/archive/v6.4.0.tar.gz"],
+        sha256 = "05c3c3602d25aeda1e9dbc91d3b66e624c1f9fdadf273e5480b489e744ca7269",
+        strip_prefix = "buildtools-6.4.0",
+    )
+
     maybe(
         http_archive,
         name = "bazel_skylib",