build: Add build recipes for gRPC binary

[julienrbrt]

Overview

Summary by CodeRabbit

Release Notes

• Chores
  • Added support for building and distributing the gRPC binary
  • Build pipeline now includes gRPC component compilation

[github-actions]

The latest Buf updates on your PR. Results from workflow CI / buf-check (pull_request).

Build	Format	Lint	Breaking	Updated (UTC)
✅ passed	⏩ skipped	✅ passed	✅ passed	Apr 14, 2026, 7:15 AM

[claude]

Claude finished @julienrbrt's task in 58s —— View job

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Code Review

• Gather context and read changed files
• Review .just/build.just changes
• Post review feedback

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Summary: This is a clean, minimal PR that adds build recipes for the apps/grpc binary (evgrpc). The changes are well-structured and consistent with existing patterns.

What Changed

Two additions to .just/build.just:

1. build-grpc recipe (lines 51–57) — standalone recipe mirroring build-evm exactly.
2. build-all integration (lines 29–30) — grpc build step inserted between evm and local-da.

Review

Consistency ✅
The new build-grpc recipe follows the same pattern as build-evm precisely: @mkdir -p, go build -ldflags, and a Check the binary with: echo. No deviation from convention.

Binary naming ✅
Output is named evgrpc, which correctly matches Use: "evgrpc" in apps/grpc/main.go:17.

build-all ordering ✅
The grpc binary is inserted between evm and local-da, keeping the recipe logically grouped.

mkdir -p in build-all ✅
build-all already calls @mkdir -p {{ build_dir }} once at the top before building any binary — the new lines correctly omit a redundant mkdir.

Minor Suggestion

The root AGENTS.md / CLAUDE.md building section only documents just build, just install, just build-all, and just docker-build. Consider adding just build-grpc for discoverability, similar to how build-evm and build-da exist as standalone recipes. Not a blocker, just a documentation gap.

Also, apps/grpc/README.md shows go build -o evgrpc without ldflags, while the just recipe correctly injects version/gitsha via -ldflags. You may want to update the README's build instruction to use just build-grpc to avoid this inconsistency — but that's out of scope for this PR.

Overall: LGTM. The change is simple, correct, and consistent with the rest of the build tooling.

[coderabbitai]

📝 Walkthrough

Walkthrough

A new build-grpc recipe was added to the build system, and the build-all recipe was updated to include gRPC binary compilation alongside existing build steps for other components.

Changes

Cohort / File(s)	Summary
Build Recipe Updates .just/build.just	Added new build-grpc recipe for compiling the gRPC application, and integrated it into build-all to build gRPC binary between EVM and local-da build steps.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 A carrot-colored build we've baked,
With gRPC paths newly laid,
The recipes now dance in harmony,
Compiling faster, wild and free—
Just add the magic, watch it soar! ✨

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The PR description contains only the template boilerplate with no actual content explaining the changes, context, rationale, or linked issues.	Fill in the Overview section with a clear explanation of the changes, context, goals, and rationale. Consider linking the relevant issue if applicable.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely describes the main changes: adding build recipes for a gRPC binary, which matches the actual modifications to the build system.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch julien/grpc-apps

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[coderabbitai]

🧹 Nitpick comments (1)

.just/build.just (1)

51-58: Consider DRYing the gRPC build command across recipes.

build-grpc and build-all now duplicate the same grpc build invocation. Reusing build-grpc inside build-all would reduce drift risk.

Suggested simplification

 build-all:
     `@echo` "--> Building all ev-node binaries"
     `@mkdir` -p {{ build_dir }}
     `@echo` "--> Building testapp"
     `@cd` apps/testapp && go build -ldflags "{{ ldflags }}" -o {{ build_dir }}/testapp .
     `@echo` "--> Building evm"
     `@cd` apps/evm && go build -ldflags "{{ ldflags }}" -o {{ build_dir }}/evm .
-    `@echo` "--> Building grpc"
-    `@cd` apps/grpc && go build -ldflags "{{ ldflags }}" -o {{ build_dir }}/evgrpc .
+    `@just` build-grpc
     `@echo` "--> Building local-da"
     `@cd` tools/local-da && go build -ldflags "{{ ldflags }}" -o {{ build_dir }}/local-da .
     `@echo` "--> All ev-node binaries built!"

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In @.just/build.just around lines 51 - 58, The gRPC build invocation is
duplicated between the Justfile recipes build-grpc and build-all; update
build-all to call the existing build-grpc recipe instead of repeating the
commands. Locate the Just recipes named build-grpc and build-all and replace the
grpc-specific lines in build-all with a dependency or invocation of build-grpc
(e.g., call or run the build-grpc recipe) so the grpc binary build is
centralized in build-grpc and not duplicated across recipes.

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Nitpick comments:
In @.just/build.just:
- Around line 51-58: The gRPC build invocation is duplicated between the
Justfile recipes build-grpc and build-all; update build-all to call the existing
build-grpc recipe instead of repeating the commands. Locate the Just recipes
named build-grpc and build-all and replace the grpc-specific lines in build-all
with a dependency or invocation of build-grpc (e.g., call or run the build-grpc
recipe) so the grpc binary build is centralized in build-grpc and not duplicated
across recipes.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: a58c7661-7af2-4f21-bfe5-39d0555598db

📥 Commits

Reviewing files that changed from the base of the PR and between cc540d5 and b7aac69.

📒 Files selected for processing (1)

• .just/build.just

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 61.79%. Comparing base (cc540d5) to head (b7aac69).
⚠️ Report is 6 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3250      +/-   ##
==========================================
- Coverage   61.81%   61.79%   -0.02%     
==========================================
  Files         120      120              
  Lines       12670    12670              
==========================================
- Hits         7832     7830       -2     
- Misses       3961     3962       +1     
- Partials      877      878       +1     

Flag	Coverage Δ
combined	61.79% <ø> (-0.02%)	⬇️

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