bazel: Add @envoy_repo (#5)

Signed-off-by: Ryan Northey <ryan@synca.io>

.github/workflows/envoy.yml

@@ -0,0 +1,25 @@
+name: Envoy
+
+permissions:
+  contents: read
+
+on:
+  pull_request:
+  push:
+    branches:
+    - main
+
+concurrency:
+  group: >-
+    ${{ github.event.inputs.head_ref || github.run_id }}
+
+
+jobs:
+  envoy:
+    runs-on: ubuntu-24.04
+    if: github.repository_owner == 'envoyproxy'
+    steps:
+    - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332  # v4.1.7
+    - run: |
+        bazel build --config=ci //:envoy_versions
+        cat bazel-bin/envoy_versions.json | jq '.'

BUILD

@@ -1,5 +1,6 @@
 load("@bazel_gazelle//:def.bzl", "gazelle")
 load("@io_bazel_rules_go//go:def.bzl", "go_binary", "go_library")
+load("@aspect_bazel_lib//lib:jq.bzl", "jq")
 
 # gazelle:prefix github.com/aptly-dev/aptly
 gazelle(name = "gazelle")
@@ -21,3 +22,26 @@ gazelle(
     command = "update-repos",
     data = [":go.mod"],
 )
+
+jq(
+    name = "envoy_versions",
+    srcs = ["@envoy_repo//:project"],
+    out = "envoy_versions.json",
+    filter = """
+    .releases as $releases
+    | {
+      latest_releases: [
+        .stable_versions[]
+        | . as $minor
+        | {
+            version: $minor,
+            releases: (
+              $releases
+              | map(select(startswith("v" + $minor + ".")))
+            )
+          }
+      ]
+    }
+    """,
+    visibility = ["//visibility:public"],
+)

WORKSPACE

@@ -11,9 +11,13 @@ load("//:setup.bzl", "setup")
 setup()
 
 load("//:toolchains.bzl", "toolchains")
-toolchains()
+toolchains(VERSIONS)
+
+load("//:setup_extra.bzl", "setup_extra")
+setup_extra()
+
+load("//:deps_extra.bzl", "dependencies_extra")
+dependencies_extra()
 
-load("@bazel_gazelle//:deps.bzl", "gazelle_dependencies")
 # gazelle:repo bazel_gazelle
 # gazelle:repository_macro deps-go.bzl%go_dependencies
-gazelle_dependencies(go_repository_default_config = "//:WORKSPACE")

deps.bzl

@@ -1,3 +1,4 @@
+load("@aspect_bazel_lib//lib:repositories.bzl", "aspect_bazel_lib_dependencies")
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 load("@com_google_protobuf//:protobuf_deps.bzl", "protobuf_deps")
 load("@rules_proto//proto:repositories.bzl", "rules_proto_dependencies")
@@ -10,3 +11,4 @@ def dependencies():
     aptly_dependencies()
     go_dependencies()
     go_rules_dependencies()
+    aspect_bazel_lib_dependencies()

deps_extra.bzl

@@ -0,0 +1,6 @@
+load("@base_pip3//:requirements.bzl", pip_dependencies = "install_deps")
+load("@bazel_gazelle//:deps.bzl", "gazelle_dependencies")
+
+def dependencies_extra():
+    pip_dependencies()
+    gazelle_dependencies(go_repository_default_config = "//:WORKSPACE")

setup_extra.bzl

@@ -0,0 +1,6 @@
+load("@envoy//bazel:python_dependencies.bzl", "envoy_python_dependencies")
+load("@envoy//bazel:repo.bzl", "envoy_repo")
+
+def setup_extra():
+    envoy_python_dependencies()
+    envoy_repo()

toolchains.bzl

@@ -1,13 +1,17 @@
+load("@aspect_bazel_lib//lib:repositories.bzl", "register_jq_toolchains", "register_yq_toolchains")
 load("@io_bazel_rules_go//go:deps.bzl", "go_register_toolchains")
 load("@rules_proto//proto:toolchains.bzl", "rules_proto_toolchains")
 load("@rules_python//python:repositories.bzl", "python_register_toolchains")
 
-def toolchains():
+def _python_minor_version(python_version):
+    return "_".join(python_version.split(".")[:2])
+
+def toolchains(versions):
     python_register_toolchains(
-        name = "python3_12",
-        # Available versions are listed in @rules_python//python:versions.bzl.
-        # We recommend using the same version your team is already standardized on.
-        python_version = "3.12",
+        name = "python%s" % _python_minor_version(versions["python"]),
+        python_version = versions["python"],
     )
     rules_proto_toolchains()
     go_register_toolchains(version = "1.22.4")
+    register_jq_toolchains(version = versions["jq"])
+    register_yq_toolchains(version = versions["yq"])

versions.bzl

@@ -1,5 +1,7 @@
 
 VERSIONS = {
+    "jq": "1.7",
+    "yq": "4.24.4",
     "python": "3.12",
     "aspect_bazel_lib": {
         "type": "github_archive",