ci: Use codex produced v8 artifacts for release builds (#23934)

Updates our build script to pull down the artifacts like we do in CI for
building v8 into our targets.

This changes the flow so that we now pre-install rusty v8 assets for all
of our release targets from pre-built in workflow.
Secondarily if running it locally we now optionally pull the assets down
on python run assuming the user hasn't set the proper values, it then
provides them.

Sorry for the miss here.

.github/actions/setup-rusty-v8/action.yml

@@ -1,29 +1,20 @@
-name: setup-rusty-v8-musl
-description: Download and verify musl rusty_v8 artifacts for Cargo builds.
+name: setup-rusty-v8
+description: Download and verify Codex-built rusty_v8 artifacts for Cargo builds.
 inputs:
   target:
-    description: Rust musl target triple.
+    description: Rust target triple with Codex-built V8 release artifacts.
     required: true
 
 runs:
   using: composite
   steps:
-    - name: Configure musl rusty_v8 artifact overrides and verify checksums
+    - name: Configure rusty_v8 artifact overrides and verify checksums
       shell: bash
       env:
         TARGET: ${{ inputs.target }}
       run: |
         set -euo pipefail
 
-        case "${TARGET}" in
-          x86_64-unknown-linux-musl|aarch64-unknown-linux-musl)
-            ;;
-          *)
-            echo "Unsupported musl rusty_v8 target: ${TARGET}" >&2
-            exit 1
-            ;;
-        esac
-
         version="$(python3 "${GITHUB_WORKSPACE}/.github/scripts/rusty_v8_bazel.py" resolved-v8-crate-version)"
         release_tag="rusty-v8-v${version}"
         base_url="https://github.com/openai/codex/releases/download/${release_tag}"
@@ -42,6 +33,10 @@ runs:
           exit 1
         fi
 
-        (cd "${binding_dir}" && sha256sum -c "${checksums_path}")
+        if command -v sha256sum >/dev/null 2>&1; then
+          (cd "${binding_dir}" && sha256sum -c "${checksums_path}")
+        else
+          (cd "${binding_dir}" && shasum -a 256 -c "${checksums_path}")
+        fi
         echo "RUSTY_V8_ARCHIVE=${archive_path}" >> "${GITHUB_ENV}"
         echo "RUSTY_V8_SRC_BINDING_PATH=${binding_path}" >> "${GITHUB_ENV}"

.github/workflows/rust-ci-full.yml

@@ -436,9 +436,9 @@ jobs:
           echo "CFLAGS=${cflags}" >> "$GITHUB_ENV"
           echo "CXXFLAGS=${cxxflags}" >> "$GITHUB_ENV"
 
-      - if: ${{ matrix.target == 'x86_64-unknown-linux-musl' || matrix.target == 'aarch64-unknown-linux-musl' }}
-        name: Configure musl rusty_v8 artifact overrides and verify checksums
-        uses: ./.github/actions/setup-rusty-v8-musl
+      - if: ${{ !contains(matrix.target, 'windows') }}
+        name: Configure rusty_v8 artifact overrides and verify checksums
+        uses: ./.github/actions/setup-rusty-v8
         with:
           target: ${{ matrix.target }}
 

.github/workflows/rust-release.yml

@@ -340,9 +340,8 @@ jobs:
           echo "CFLAGS=${cflags}" >> "$GITHUB_ENV"
           echo "CXXFLAGS=${cxxflags}" >> "$GITHUB_ENV"
 
-      - if: ${{ matrix.target == 'x86_64-unknown-linux-musl' || matrix.target == 'aarch64-unknown-linux-musl' }}
-        name: Configure musl rusty_v8 artifact overrides and verify checksums
-        uses: ./.github/actions/setup-rusty-v8-musl
+      - name: Configure rusty_v8 artifact overrides and verify checksums
+        uses: ./.github/actions/setup-rusty-v8
         with:
           target: ${{ matrix.target }}