feat: wire up protobuf if requested

scaffold.yaml

@@ -39,6 +39,11 @@ questions:
       message: Setup version stamping?
       description: "Read more: https://blog.aspect.build/versioning-releases-from-a-monorepo"
       confirm: true
+  - name: protobuf
+    prompt:
+      message: Setup Protocol Buffers?
+      description: "Install rules_proto; see https://github.com/bazelbuild/rules_proto/discussions/213"
+      confirm: true
 
 features:
   - value: "{{ .Scaffold.lint }}"
@@ -71,12 +76,12 @@ presets:
     lint: true
     langs: ['JavaScript & TypeScript', 'Python']
     stamp: true
+    protobuf: true
   js:
     lint: true
     langs: ['JavaScript & TypeScript']
   py:
     lint: true
     langs: ['Python']
   minimal:
-    lint: false
     langs: []

{{ .ProjectSnake }}/.bazelrc

@@ -21,6 +21,9 @@ common --@aspect_rules_ts//ts:default_to_tsc_transpiler
 # --config=release
 common:release --stamp --workspace_status_command=./tools/workspace_status.sh
 {{ end }}
+{{- if .Scaffold.protobuf }}
+common --incompatible_enable_proto_toolchain_resolution
+{{ end }}
 
 # Load any settings & overrides specific to the current user from `.aspect/bazelrc/user.bazelrc`.
 # This file should appear in `.gitignore` so that settings are not shared with team members. This

{{ .ProjectSnake }}/MODULE.bazel

@@ -1,10 +1,16 @@
 bazel_dep(name = "aspect_bazel_lib", version = "2.7.6")
+{{- if .Scaffold.lint }}
 bazel_dep(name = "aspect_rules_lint", version = "0.21.0")
+{{- end }}
+{{- if .Scaffold.protobuf }}
+bazel_dep(name = "rules_proto", version = "6.0.0")
+bazel_dep(name = "toolchains_protoc", version = "0.2.4")
+{{- end}}
 bazel_dep(name = "rules_multitool", version = "0.7.1")
 {{- if .Computed.javascript }}
 bazel_dep(name = "aspect_rules_js", version = "2.0.0-rc1")
 bazel_dep(name = "aspect_rules_ts", version = "3.0.0-rc0")
-{{- end}}
+{{- end }}
 {{- if .Computed.python }}
 bazel_dep(name = "rules_python", version = "0.32.2")
 bazel_dep(name = "aspect_rules_py", version = "0.7.3")
@@ -50,4 +56,8 @@ pip.parse(
     python_version = "3.9",
 )
 use_repo(pip, "pip")
-{{- end}}
+{{- end }}
+
+{{- if .Scaffold.protobuf }}
+register_toolchains("//tools/toolchains:all", dev_dependency = True)
+{{- end }}

{{ .ProjectSnake }}/requirements.txt

@@ -3,4 +3,4 @@
 # direct and indirect dependencies are pinned.
 # Therefore we only need to constrain versions in this file when some ranges 
 # of dependency versions are not compatible.
-requests
+protobuf

{{ .ProjectSnake }}/requirements_lock.txt

@@ -4,23 +4,16 @@
 #
 #    bazel run //:requirements.update
 #
-certifi==2023.7.22 \
-    --hash=sha256:539cc1d13202e33ca466e88b2807e29f4c13049d6d87031a3c110744495cb082 \
-    --hash=sha256:92d6037539857d8206b8f6ae472e8b77db8058fec5937a1ef3f54304089edbb9
-    # via requests
-charset-normalizer==2.1.1 \
-    --hash=sha256:5a3d016c7c547f69d6f81fb0db9449ce888b418b5b9952cc5e6e66843e9dd845 \
-    --hash=sha256:83e9a75d1911279afd89352c68b45348559d1fc0506b054b346651b5e7fee29f
-    # via requests
-idna==3.7 \
-    --hash=sha256:028ff3aadf0609c1fd278d8ea3089299412a7a8b9bd005dd08b9f8285bcb5cfc \
-    --hash=sha256:82fee1fc78add43492d3a1898bfa6d8a904cc97d8427f683ed8e798d07761aa0
-    # via requests
-requests==2.32.0 \
-    --hash=sha256:f2c3881dddb70d056c5bd7600a4fae312b2a300e39be6a118d30b90bd27262b5 \
-    --hash=sha256:fa5490319474c82ef1d2c9bc459d3652e3ae4ef4c4ebdd18a21145a47ca4b6b8
+protobuf==5.26.0 \
+    --hash=sha256:2c334550e1cb4efac5c8a3987384bf13a4334abaf5ab59e40479e7b70ecd6b19 \
+    --hash=sha256:6ee9d1aa02f951c5ce10bf8c6cfb7604133773038e33f913183c8b5201350600 \
+    --hash=sha256:7e47c57303466c867374a17b2b5e99c5a7c8b72a94118e2f28efb599f19b4069 \
+    --hash=sha256:82f5870d74c99addfe4152777bdf8168244b9cf0ac65f8eccf045ddfa9d80d9b \
+    --hash=sha256:8eef61a90631c21b06b4f492a27e199a269827f046de3bb68b61aa84fcf50905 \
+    --hash=sha256:a49b6c5359bf34fb7bf965bf21abfab4476e4527d822ab5289ee3bf73f291159 \
+    --hash=sha256:ca825f4eecb8c342d2ec581e6a5ad1ad1a47bededaecd768e0d3451ae4aaac2b \
+    --hash=sha256:dfd29f6eb34107dccf289a93d44fb6b131e68888d090b784b691775ac84e8213 \
+    --hash=sha256:e184175276edc222e2d5e314a72521e10049938a9a4961fe4bea9b25d073c03f \
+    --hash=sha256:efd4f5894c50bd76cbcfdd668cd941021333861ed0f441c78a83d8254a01cc9f \
+    --hash=sha256:f9ecc8eb6f18037e0cbf43256db0325d4723f429bca7ef5cd358b7c29d65f628
     # via -r requirements.txt
-urllib3==1.26.18 \
-    --hash=sha256:34b97092d7e0a3a8cf7cd10e386f401b3737364026c45e622aa02903dffe0f07 \
-    --hash=sha256:f8ecc1bba5667413457c529ab955bf8c67b45db799d159066261719e328580a0
-    # via requests

{{ .ProjectSnake }}/tools/toolchains/BUILD.bazel

@@ -0,0 +1,14 @@
+{{- if .Scaffold.protobuf }}
+load("@rules_proto//proto:defs.bzl", "proto_lang_toolchain")
+
+{{- if .Computed.python }}
+# Configure protoc to have the right arguments for generating Python stubs.
+proto_lang_toolchain(
+    name = "protoc_py_toolchain",
+    command_line = "--python_out=%s",
+    progress_message = "Generating Python proto_library %{label}",
+    runtime = "@pip//protobuf",
+    toolchain_type = "@rules_python//python/proto:toolchain_type",
+)
+{{- end}}
+{{- end}}