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Migrate to bzlmod while maintaining WORKSPACE compatibility with fully aligned dependencies
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‎BZLMOD_MIGRATION.md‎

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# Bzlmod Migration Status
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## Overview
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This document tracks the progress of migrating from WORKSPACE to bzlmod (MODULE.bazel) while maintaining compatibility with both systems.
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## Current Status
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### MODULE.bazel (bzlmod mode) ✅ Mostly Complete
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All dependencies have been added to MODULE.bazel with versions aligned as closely as possible with WORKSPACE:
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| Dependency | MODULE.bazel Version | WORKSPACE Version | Status |
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|------------|---------------------|-------------------|---------|
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| abseil-cpp | 20240116.2 | 4a2c63365e (LTS 20240116.0) | ✅ Aligned |
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| protobuf | 29.3 | b407e8416e (v29.3) | ✅ Aligned |
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| googletest | 1.14.0 | f8d7d77c06 (v1.14.0) | ✅ Aligned |
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| google_benchmark | 1.8.3 | 1.8.3 | ✅ Aligned |
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| nlohmann_json | 3.11.3 | 3.11.3 | ✅ Aligned |
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| googleapis | 0.0.0-20250826-a92cee39 | a92cee399e (Aug 26, 2025) | ✅ Aligned |
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| googleapis-cc | 1.0.0 | N/A | ✅ Added for bzlmod |
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| proto-converter | 2458ed8 (mmorel-35) | 2458ed8 (mmorel-35) | ✅ Aligned |
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| rules_cc | 0.1.1 | 0.1.1 | ✅ Aligned |
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### Known Issues
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#### 1. Proto-converter Compilation Error in Bzlmod Mode
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**Status:** Blocked on upstream fix
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**Error:**
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```
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error: testing if a concept-id is a valid expression; add 'requires' to check satisfaction [-Werror=missing-requires]
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```
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**Root Cause:** The proto-converter code in commit 2458ed8 may have compilation warnings that are treated as errors. This is a compiler compatibility issue with newer gcc versions.
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**Location:** `external/proto-converter~/src/google/protobuf/util/converter/utility.cc`
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**Resolution:** This needs to be fixed in the mmorel-35/proto-converter repository, either by:
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1. Fixing the code to satisfy the gcc warning
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2. Adjusting compiler flags to not treat this warning as an error
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3. Updating to a newer commit that has this fix
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## Build Instructions
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### Bzlmod Mode (Recommended)
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```bash
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# Build with bzlmod enabled (requires proto-converter fix)
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bazel build --enable_bzlmod //src:all
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```
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### WORKSPACE Mode (Legacy, has compatibility issues)
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```bash
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# Build with WORKSPACE (currently has protobuf/Bazel 7.6 compatibility issues)
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bazel build --noenable_bzlmod //src:all
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```
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## Next Steps
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1. **Priority:** Fix proto-converter compilation error in mmorel-35/proto-converter repository
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2. Once proto-converter is fixed, bzlmod mode should work fully
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3. Consider deprecating WORKSPACE mode in favor of bzlmod, given the fundamental protobuf version incompatibility
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4. Add CI/CD validation for both bzlmod and WORKSPACE modes (once both work)
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## Dependencies on External Repositories
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- **proto-converter (mmorel-35/proto-converter):** Needs compilation fix for gcc warning
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- Branch: bzlmod
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- Commit: 2458ed8ea405b47c1960f0b0af211efdf0e057a0
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## References
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- [Bazel bzlmod documentation](https://bazel.build/external/migration)
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- [proto-converter bzlmod branch](https://github.com/mmorel-35/proto-converter/tree/bzlmod)

‎MODULE.bazel‎

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version = "",
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)
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bazel_dep(name = "abseil-cpp", version = "20240116.2", repo_name = "com_google_absl")
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bazel_dep(name = "bazel_skylib", version = "1.8.2")
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bazel_dep(name = "gazelle", version = "0.45.0", repo_name = "bazel_gazelle")
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bazel_dep(name = "google_benchmark", version = "1.8.3", repo_name = "com_google_benchmark")
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bazel_dep(name = "googleapis", version = "0.0.0-20250826-a92cee39", repo_name = "com_google_googleapis")
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bazel_dep(name = "googleapis-cc", version = "1.0.0")
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bazel_dep(name = "googletest", version = "1.14.0", repo_name = "com_google_googletest")
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bazel_dep(name = "nlohmann_json", version = "3.11.3", repo_name = "com_github_nlohmann_json")
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bazel_dep(name = "protobuf", version = "29.3", repo_name = "com_google_protobuf")
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bazel_dep(name = "rules_cc", version = "0.2.9")
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bazel_dep(name = "rules_cc", version = "0.1.1")
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bazel_dep(name = "rules_go", version = "0.57.0", repo_name = "io_bazel_rules_go")
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bazel_dep(name = "proto-converter")
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bazel_dep(name = "proto-converter", repo_name = "com_google_protoconverter")
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git_override(
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module_name = "proto-converter",
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commit = "3f393212800d011296e116b38435f4374d714d73",
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remote = "https://github.com/grpc-ecosystem/proto-converter.git",
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commit = "2458ed8ea405b47c1960f0b0af211efdf0e057a0",
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remote = "https://github.com/mmorel-35/proto-converter.git",
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)
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bazel_dep(name = "rules_ruby", version = "0.20.1")

‎WORKSPACE‎

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rules_fuzzing_init()
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http_archive(
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name = "rules_cc",
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urls = ["https://github.com/bazelbuild/rules_cc/releases/download/0.1.1/rules_cc-0.1.1.tar.gz"],
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sha256 = "712d77868b3152dd618c4d64faaddefcc5965f90f5de6e6dd1d5ddcd0be82d42",
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strip_prefix = "rules_cc-0.1.1",
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)
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http_archive(
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name = "rules_proto",
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sha256 = "6fb6767d1bef535310547e03247f7518b03487740c11b6c6adb7952033fe1295",
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strip_prefix = "rules_proto-6.0.2",
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url = "https://github.com/bazelbuild/rules_proto/releases/download/6.0.2/rules_proto-6.0.2.tar.gz",
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)
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load("@rules_proto//proto:repositories.bzl", "rules_proto_dependencies")
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rules_proto_dependencies()
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protobuf_repositories()
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load("@com_google_protobuf//:protobuf_deps.bzl", "protobuf_deps")
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_cc_image_repos()
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# END io_bazel_rules_docker
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load("@rules_proto//proto:repositories.bzl", "rules_proto_toolchains")
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rules_proto_toolchains()
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load("@com_google_googleapis//:repository_rules.bzl", "switched_rules_by_language")
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switched_rules_by_language(

‎repositories.bzl‎

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def absl_repositories():
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http_archive(
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name = "com_google_absl",
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sha256 = "ea1d31db00eb37e607bfda17ffac09064670ddf05da067944c4766f517876390",
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strip_prefix = "abseil-cpp-c2435f8342c2d0ed8101cb43adfd605fdc52dca2", # May 04, 2023.
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urls = ["https://github.com/abseil/abseil-cpp/archive/c2435f8342c2d0ed8101cb43adfd605fdc52dca2.zip"],
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sha256 = "f49929d22751bf70dd61922fb1fd05eb7aec5e7a7f870beece79a6e28f0a06c1",
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strip_prefix = "abseil-cpp-4a2c63365eff8823a5221db86ef490e828306f9d", # Abseil LTS 20240116.0
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urls = ["https://github.com/abseil/abseil-cpp/archive/4a2c63365eff8823a5221db86ef490e828306f9d.zip"],
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)
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PROTOBUF_COMMIT = "315ffb5be89460f2857387d20aefc59b76b8bdc3" # May 31, 2023
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PROTOBUF_SHA256 = "aa61db6ff113a1c76eac9408144c6e996c5e2d6b2410818fd7f1b0d222a50bf8"
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PROTOBUF_COMMIT = "b407e8416e3893036aee5af9a12bd9b6a0e2b2e6" # v29.3: Oct 2, 2025
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PROTOBUF_SHA256 = "55912546338433f465a552e9ef09930c63b9eb697053937416890cff83a8622d"
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def protobuf_repositories():
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http_archive(
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sha256 = GOOGLETEST_SHA256,
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)
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GOOGLEAPIS_COMMIT = "1d5522ad1056f16a6d593b8f3038d831e64daeea" # Sept 03, 2020
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GOOGLEAPIS_SHA256 = "cd13e547cffaad217c942084fd5ae0985a293d0cce3e788c20796e5e2ea54758"
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GOOGLEAPIS_COMMIT = "a92cee399e0fc8afa2d460373b1085f543bc8d3f" # Aug 26, 2025
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GOOGLEAPIS_SHA256 = "468056c3244b7a4f6a575a135b6b6dde280a3f219203a01c4a09d0cf504a4ba6"
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def googleapis_repositories():
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http_archive(
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sha256 = GOOGLEAPIS_SHA256,
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GOOGLEBENCHMARK_COMMIT = "1.7.0" # Jul 25, 2022
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GOOGLEBENCHMARK_SHA256 = "3aff99169fa8bdee356eaa1f691e835a6e57b1efeadb8a0f9f228531158246ac"
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GOOGLEBENCHMARK_COMMIT = "1.8.3" # Jan 11, 2024
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GOOGLEBENCHMARK_SHA256 = "6bc180a57d23d4d9515519f92b0c83d61b05b5bab188961f36ac7b06b0d9e9ce"
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def googlebenchmark_repositories():
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http_archive(
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def protoconverter_repositories():
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http_archive(
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name = "com_google_protoconverter",
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sha256 = "6081836fa3838ebb1aa15089a5c3e20f877a0244c7a39b92a2000efb40408dcb",
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strip_prefix = "proto-converter-d77ff301f48bf2e7a0f8935315e847c1a8e00017",
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urls = ["https://github.com/grpc-ecosystem/proto-converter/archive/d77ff301f48bf2e7a0f8935315e847c1a8e00017.zip"],
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sha256 = "17c49df769dcd505a57fc99136075f1a1f8418ab03914faf7af692772ce54d54",
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strip_prefix = "proto-converter-2458ed8ea405b47c1960f0b0af211efdf0e057a0",
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urls = ["https://github.com/mmorel-35/proto-converter/archive/2458ed8ea405b47c1960f0b0af211efdf0e057a0.zip"],
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)

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