From b7102f0e5549182f3e5ed906825321e26a863f65 Mon Sep 17 00:00:00 2001
From: Tarek Ziade <tarek@ziade.org>
Date: Mon, 4 May 2026 14:19:43 +0200
Subject: [PATCH] ci: install protoc in publish workflow

webnn-onnx-utils 0.1.1's build script invokes prost-build to compile
ONNX protos, which requires the protoc compiler. The macOS runner does
not ship with protoc, so the wheel build failed with:

  failed to compile ONNX protos with prost-build:
  Could not find `protoc`.

Add the arduino/setup-protoc action before maturin runs so all three
runners (ubuntu, macos, windows) have protoc on PATH.
---
 .github/workflows/publish.yml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index dea38de..c2fe5c4 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -27,6 +27,11 @@ jobs:
       - name: Set up Rust
         uses: dtolnay/rust-toolchain@stable
 
+      - name: Install protoc
+        uses: arduino/setup-protoc@v3
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+
       - name: Install maturin
         run: pip install maturin