Initial bzlmod support (#88)

I've held off on adding more CI to this for now, we can tackle that when
we tackle getting this on the BCR.

Note that cel-cpp is still not on the BCR; I'm not sure if this is a
blocker for us getting on the BCR. Still, it should be possible for
users to consume protovalidate-cc with bzlmod after this commit using
`bazel_dep` + `archive_override` just like we're doing for cel-cpp.

Closes #66.

Author: jchadwick-buf

.bazelrc

@@ -1,4 +1,4 @@
-common --noenable_bzlmod --enable_workspace
+common --enable_bzlmod --noenable_workspace
 
 build --cxxopt=-std=c++17 --host_cxxopt=-std=c++17
 build --cxxopt=-fsized-deallocation

MODULE.bazel

@@ -0,0 +1,47 @@
+# Copyright 2023-2025 Buf Technologies, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# DO NOT EDIT MODULE.bazel - Edit MODULE.bazel.tmpl instead, then run make generate.
+
+module(name = "protovalidate-cc")
+
+bazel_dep(name = "re2", version = "2024-07-02.bcr.1", repo_name = "com_googlesource_code_re2")
+
+bazel_dep(name = "protobuf", version = "29.2", repo_name = "com_google_protobuf")
+
+bazel_dep(name = "rules_proto", version = "7.1.0")
+
+bazel_dep(name = "rules_buf", version = "0.3.0")
+
+bazel_dep(name = "googletest", version = "1.16.0.bcr.1", repo_name = "com_google_googletest")
+
+bazel_dep(name = "abseil-cpp", version = "20240722.0", repo_name = "com_google_absl")
+
+bazel_dep(name = "cel-cpp", repo_name = "com_google_cel_cpp")
+
+archive_override(
+    module_name = "cel-cpp",
+    strip_prefix = "cel-cpp-0.11.0",
+    patches=[
+        "@protovalidate-cc//deps:patches/cel_cpp/0001-Allow-message-field-access-using-index-operator.patch",
+        "@protovalidate-cc//deps:patches/cel_cpp/0002-Add-missing-include-for-absl-StrCat.patch",
+        "@protovalidate-cc//deps:patches/cel_cpp/0003-Fix-build-on-Windows-MSVC.patch",
+    ],
+    patch_args=["-p1"],
+    urls = [
+        "https://github.com/google/cel-cpp/archive/v0.11.0.tar.gz"
+    ]
+)
+
+bazel_dep(name = "protovalidate", version = "0.10.4", repo_name = "com_github_bufbuild_protovalidate")

MODULE.bazel.lock

@@ -0,0 +1,47 @@
+# Copyright 2023-2025 Buf Technologies, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# DO NOT EDIT MODULE.bazel - Edit MODULE.bazel.tmpl instead, then run make generate.
+
+module(name = "protovalidate-cc")
+
+bazel_dep(name = "re2", version = "2024-07-02.bcr.1", repo_name = "com_googlesource_code_re2")
+
+bazel_dep(name = "protobuf", version = "{{protobuf.meta.version}}", repo_name = "com_google_protobuf")
+
+bazel_dep(name = "rules_proto", version = "7.1.0")
+
+bazel_dep(name = "rules_buf", version = "0.3.0")
+
+bazel_dep(name = "googletest", version = "1.16.0.bcr.1", repo_name = "com_google_googletest")
+
+bazel_dep(name = "abseil-cpp", version = "{{absl.meta.version}}", repo_name = "com_google_absl")
+
+bazel_dep(name = "cel-cpp", repo_name = "com_google_cel_cpp")
+
+archive_override(
+    module_name = "cel-cpp",
+    strip_prefix = "cel-cpp-{{cel_cpp.meta.version}}",
+    patches=[
+        "@protovalidate-cc//deps:patches/cel_cpp/0001-Allow-message-field-access-using-index-operator.patch",
+        "@protovalidate-cc//deps:patches/cel_cpp/0002-Add-missing-include-for-absl-StrCat.patch",
+        "@protovalidate-cc//deps:patches/cel_cpp/0003-Fix-build-on-Windows-MSVC.patch",
+    ],
+    patch_args=["-p1"],
+    urls = [
+        "https://github.com/google/cel-cpp/archive/v{{cel_cpp.meta.version}}.tar.gz"
+    ]
+)
+
+bazel_dep(name = "protovalidate", version = "{{protovalidate.meta.version}}", repo_name = "com_github_bufbuild_protovalidate")

MODULE.bazel.tmpl

@@ -32,7 +32,7 @@ clean: ## Delete intermediate build artifacts
 	git clean -Xdf
 
 .PHONY: generate
-generate: generate-license ## Regenerate code and license headers
+generate: generate-bzlmod generate-license ## Regenerate code and license headers
 
 .PHONY: test
 test: generate ## Run all unit tests
@@ -49,6 +49,12 @@ conformance: $(BIN)/protovalidate-conformance
 	$(BAZEL) build -c opt //buf/validate/conformance:runner_main && \
 	$(BIN)/protovalidate-conformance bazel-bin/buf/validate/conformance/runner_main $(ARGS)
 
+.PHONY: generate-bzlmod
+generate-bzlmod: ## Generate MODULE.bazel file from template
+	<MODULE.bazel.tmpl >MODULE.bazel \
+	jq -nrR --argjson json "$$(<./deps/shared_deps.json)" \
+		'inputs | gsub("\\{\\{(?<v>[^}]+)\\}\\}"; .v | split(".") as $$path | reduce $$path[] as $$key ($$json; .[$$key]) | tostring)'
+
 .PHONY: generate-license
 generate-license: $(BIN)/license-header ## Generate license headers for files
 	@# We want to operate on a list of modified and new files, excluding

Makefile

@@ -103,6 +103,7 @@ cc_library(
         patches=[
             "@com_github_bufbuild_protovalidate_cc//deps:patches/cel_cpp/0001-Allow-message-field-access-using-index-operator.patch",
             "@com_github_bufbuild_protovalidate_cc//deps:patches/cel_cpp/0002-Add-missing-include-for-absl-StrCat.patch",
+            "@com_github_bufbuild_protovalidate_cc//deps:patches/cel_cpp/0003-Fix-build-on-Windows-MSVC.patch",
         ],
         patch_args=["-p1"],
     ),

WORKSPACE.bzlmod

@@ -21,7 +21,7 @@ absl::Status Validator::ValidateMessage(
   const auto* constraints_or = factory_->GetMessageConstraints(message.GetDescriptor());
   if (constraints_or == nullptr) {
     return absl::NotFoundError(
-        "constraints not loaded for message: " + message.GetDescriptor()->full_name());
+        absl::StrCat("constraints not loaded for message: ", message.GetDescriptor()->full_name()));
   }
   if (!constraints_or->ok()) {
     return constraints_or->status();