chore: publish GitHub releases to AztecProtocol/barretenberg (v4 backport)

.github-new/workflows/copy-bb-release-artifacts.yml

@@ -0,0 +1,71 @@
+name: Copy BB Release Artifacts
+# When a release is published on aztec-packages, copy barretenberg artifacts
+# from AztecProtocol/barretenberg to the aztec-packages release.
+# Historical bbup versions (~before April 2026) benefit from having these artifacts here.
+# Newer bbup versions are able to download experimental nightlies from barretenberg repo.
+on:
+  release:
+    types: [published]
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: "Release tag to copy artifacts for (e.g. v0.82.0)"
+        required: true
+
+permissions:
+  contents: write
+
+jobs:
+  copy-artifacts:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Determine tag
+        id: tag
+        run: |
+          if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
+            echo "tag=${{ inputs.tag }}" >> "$GITHUB_OUTPUT"
+          else
+            echo "tag=${{ github.event.release.tag_name }}" >> "$GITHUB_OUTPUT"
+          fi
+
+      - name: Download artifacts from AztecProtocol/barretenberg
+        env:
+          GH_TOKEN: ${{ secrets.AZTEC_BOT_GITHUB_TOKEN }}
+        run: |
+          tag="${{ steps.tag.outputs.tag }}"
+          echo "Downloading artifacts for tag: $tag"
+          mkdir -p /tmp/bb-artifacts
+
+          # Download all release assets from the barretenberg repo
+          if ! gh release download "$tag" \
+            --repo AztecProtocol/barretenberg \
+            --dir /tmp/bb-artifacts; then
+            echo "::error::No release found for $tag in AztecProtocol/barretenberg"
+            exit 1
+          fi
+
+          echo "Downloaded artifacts:"
+          ls -la /tmp/bb-artifacts/
+
+      - name: Upload artifacts to aztec-packages release
+        env:
+          GH_TOKEN: ${{ secrets.AZTEC_BOT_GITHUB_TOKEN }}
+        run: |
+          tag="${{ steps.tag.outputs.tag }}"
+
+          # Ensure the release exists on aztec-packages (it should if triggered by release event,
+          # but for workflow_dispatch we may need to verify)
+          if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
+            if ! gh release view "$tag" --repo AztecProtocol/aztec-packages &>/dev/null; then
+              echo "::error::No release found for $tag in AztecProtocol/aztec-packages. Create the release first, then re-run."
+              exit 1
+            fi
+          fi
+
+          echo "Uploading artifacts to aztec-packages release $tag"
+          gh release upload "$tag" \
+            --repo AztecProtocol/aztec-packages \
+            --clobber \
+            /tmp/bb-artifacts/*
+
+          echo "Done! Artifacts copied to https://github.com/AztecProtocol/aztec-packages/releases/tag/$tag"

barretenberg/bbup/bbup

@@ -114,15 +114,19 @@ install_bb() {
     local temp_dir=$(mktemp -d)
     local temp_tar="${temp_dir}/temp.tar.gz"
 
-    # Download and extract
-    local release_url_base="https://github.com/AztecProtocol/aztec-packages/releases/download"
+    # Download and extract — try AztecProtocol/barretenberg first, fall back to aztec-packages
     local release_tag="v${version}"
     if ! version_gte "$version" "0.77.0"; then
         release_tag="aztec-packages-v${version}"
     fi
-    local binary_url="${release_url_base}/${release_tag}/barretenberg-${architecture}-${platform}.tar.gz"
+    local artifact="barretenberg-${architecture}-${platform}.tar.gz"
+    local primary_url="https://github.com/AztecProtocol/barretenberg/releases/download/${release_tag}/${artifact}"
+    local fallback_url="https://github.com/AztecProtocol/aztec-packages/releases/download/${release_tag}/${artifact}"
 
-    curl -L --fail "$binary_url" -o "$temp_tar"
+    if ! curl -sL --fail "$primary_url" -o "$temp_tar"; then
+        printf "${BLUE}Trying fallback URL...${NC}\n"
+        curl -L --fail "$fallback_url" -o "$temp_tar"
+    fi
     mkdir -p "$BB_PATH"
     tar xzf "$temp_tar" -C "$BB_PATH"
     rm -rf "$temp_dir"

barretenberg/cpp/bootstrap.sh

@@ -441,10 +441,10 @@ function bench {
   bench_cmds | STRICT_SCHEDULING=1 parallelize
 }
 
-# Upload assets to release.
+# Upload assets to release in AztecProtocol/barretenberg.
 function release {
   echo_header "bb cpp release"
-  do_or_dryrun gh release upload $REF_NAME build-release/* --clobber
+  do_or_dryrun gh release upload $REF_NAME build-release/* --repo AztecProtocol/barretenberg --clobber
 }
 
 function bench_ivc {

barretenberg/rust/barretenberg-rs/README.md

@@ -25,7 +25,7 @@ barretenberg-rs = "0.1"
 
 ### PipeBackend (default)
 
-Requires the `bb` binary to be available. Download from [Barretenberg releases](https://github.com/AztecProtocol/aztec-packages/releases).
+Requires the `bb` binary to be available. Download from [Barretenberg releases](https://github.com/AztecProtocol/barretenberg/releases).
 
 ```rust
 use barretenberg_rs::{BarretenbergApi, backends::PipeBackend};

barretenberg/rust/barretenberg-rs/build.rs

@@ -89,7 +89,7 @@ fn download_lib(out_dir: &PathBuf) {
     }
 
     let url = format!(
-        "https://github.com/AztecProtocol/aztec-packages/releases/download/v{}/barretenberg-static-{}.tar.gz",
+        "https://github.com/AztecProtocol/barretenberg/releases/download/v{}/barretenberg-static-{}.tar.gz",
         version, arch
     );
 

barretenberg/rust/bootstrap.sh

@@ -68,7 +68,7 @@ function release {
 
   # Publish to crates.io (--allow-dirty because version was just set and generated files are gitignored)
   local extra_flags=""
-  if ! gh release view "v$version" --repo AztecProtocol/aztec-packages &>/dev/null; then
+  if ! gh release view "v$version" --repo AztecProtocol/barretenberg &>/dev/null; then
     # No matching GitHub release yet — skip verification build (which would try to download libbb-external.a)
     echo "No GitHub release found for v$version, adding --no-verify (pass REF_NAME matching a release for full verification)"
     extra_flags="--no-verify"
@@ -96,7 +96,7 @@ function test_download {
   cargo clean -p barretenberg-rs 2>/dev/null || true
 
   # Build with a known release version
-  local version=${BARRETENBERG_VERSION:-$(gh release list --repo AztecProtocol/aztec-packages --limit 1 --json tagName --jq '.[0].tagName' | sed 's/^v//')}
+  local version=${BARRETENBERG_VERSION:-$(gh release list --repo AztecProtocol/barretenberg --limit 1 --json tagName --jq '.[0].tagName' | sed 's/^v//')}
   echo "Testing download with version: $version"
 
   # Retry logic for network flakiness (GitHub releases can be flaky)

bootstrap.sh

@@ -446,36 +446,22 @@ function bench {
   cache_upload bench-$(git rev-parse HEAD^{tree}).tar.gz bench-out/bench.json
 }
 
-function release_github {
-  # Add an easy link for comparing to previous release.
-  local compare_link=""
-  if gh release view "v$CURRENT_VERSION" &>/dev/null; then
-    compare_link=$(echo -e "See changes: https://github.com/AztecProtocol/aztec-packages/compare/v${CURRENT_VERSION}...${COMMIT_HASH}")
-  fi
-  # Legacy releases. TODO: Eventually remove.
-  if gh release view "aztec-packages-v$CURRENT_VERSION" &>/dev/null; then
-    compare_link=$(echo -e "See changes: https://github.com/AztecProtocol/aztec-packages/compare/aztec-packages-v${CURRENT_VERSION}...${COMMIT_HASH}")
+function release_bb_github {
+  # Create a GitHub release in AztecProtocol/barretenberg for bb artifacts.
+  # Users can manually create releases in aztec-packages via the GitHub UI if needed.
+  local bb_repo="AztecProtocol/barretenberg"
+  if gh release view "$REF_NAME" --repo "$bb_repo" &>/dev/null; then
+    return
   fi
-  # Determine if this is a prerelease (has a prerelease tag like -rc.1, -alpha, etc.)
-  local is_prerelease=false
+  local prerelease_flag=""
   if [ -n "$(semver prerelease $REF_NAME)" ]; then
-    is_prerelease=true
-  fi
-  # Ensure we have a commit release.
-  if ! gh release view "$REF_NAME" &>/dev/null; then
-    local prerelease_flag=""
-    if $is_prerelease; then
-      prerelease_flag="--prerelease"
-    fi
-    do_or_dryrun gh release create "$REF_NAME" \
-      $prerelease_flag \
-      --target $COMMIT_HASH \
-      --title "$REF_NAME" \
-      --notes "$compare_link"
-  elif ! $is_prerelease; then
-    # Release exists but this is not a prerelease version - ensure it's marked as a full release
-    do_or_dryrun gh release edit "$REF_NAME" --prerelease=false
+    prerelease_flag="--prerelease"
   fi
+  do_or_dryrun gh release create "$REF_NAME" \
+    --repo "$bb_repo" \
+    $prerelease_flag \
+    --title "$REF_NAME" \
+    --notes "Release $REF_NAME — see https://github.com/AztecProtocol/aztec-packages/commits/$COMMIT_HASH"
 }
 
 function release {
@@ -495,9 +481,9 @@ function release {
   echo_header "release all"
   set -x
 
-  # Ensure we have a github release for our REF_NAME.
-  # This is in case were are not going through release-please.
-  release_github
+  # Ensure we have a github release in AztecProtocol/barretenberg for bb artifacts.
+  # Users can create aztec-packages releases manually via the GitHub "Create a release" button.
+  release_bb_github
 
   projects=(
     barretenberg/cpp