bazel: define release bundle platforms

.github/workflows/bazel.yml

@@ -560,6 +560,24 @@ jobs:
             -- \
             "${bazel_targets[@]}"
 
+      - name: Analyze Bazel release bundle
+        if: runner.os == 'Linux'
+        env:
+          BUILDBUDDY_API_KEY: ${{ secrets.BUILDBUDDY_API_KEY }}
+        shell: bash
+        run: |
+          # Keep the documented `just build-for-release` target's platform
+          # transitions covered without compiling every release artifact in CI.
+          ./.github/scripts/run-bazel-ci.sh \
+            --print-failed-action-summary \
+            -- \
+            build \
+            --nobuild \
+            --build_metadata=COMMIT_SHA=${GITHUB_SHA} \
+            --build_metadata=TAG_job=analyze-release-bundle \
+            -- \
+            //codex-rs/cli:release_binaries
+
       - name: Verify Bazel builds bwrap
         if: runner.os == 'Linux'
         env:

BUILD.bazel

@@ -56,6 +56,52 @@ platform(
     ],
 )
 
+# Release bundles cross-compile from the host and need the complete constraint
+# set expected by both the Rust and LLVM toolchains.
+platform(
+    name = "release_linux_arm64_musl",
+    constraint_values = [
+        "@llvm//constraints/libc:musl",
+        "@llvm//constraints/pie:off",
+        "@platforms//cpu:aarch64",
+        "@platforms//os:linux",
+    ],
+    visibility = ["//visibility:public"],
+)
+
+platform(
+    name = "release_linux_amd64_musl",
+    constraint_values = [
+        "@llvm//constraints/libc:musl",
+        "@llvm//constraints/pie:off",
+        "@platforms//cpu:x86_64",
+        "@platforms//os:linux",
+    ],
+    visibility = ["//visibility:public"],
+)
+
+platform(
+    name = "release_windows_amd64",
+    constraint_values = [
+        "@llvm//constraints/windows_abi:gnullvm",
+        "@platforms//cpu:x86_64",
+        "@platforms//os:windows",
+        "@rules_rs//rs/experimental/platforms/constraints:windows_gnullvm",
+    ],
+    visibility = ["//visibility:public"],
+)
+
+platform(
+    name = "release_windows_arm64",
+    constraint_values = [
+        "@llvm//constraints/windows_abi:gnullvm",
+        "@platforms//cpu:aarch64",
+        "@platforms//os:windows",
+        "@rules_rs//rs/experimental/platforms/constraints:windows_gnullvm",
+    ],
+    visibility = ["//visibility:public"],
+)
+
 toolchain(
     name = "windows_gnullvm_tests_on_msvc_host_toolchain",
     exec_compatible_with = [

defs.bzl

@@ -4,14 +4,14 @@ load("@rules_platform//platform_data:defs.bzl", "platform_data")
 load("@rules_rust//cargo/private:cargo_build_script_wrapper.bzl", "cargo_build_script")
 load("@rules_rust//rust:defs.bzl", "rust_binary", "rust_library", "rust_proc_macro", "rust_test")
 
-PLATFORMS = [
-    "linux_arm64_musl",
-    "linux_amd64_musl",
-    "macos_amd64",
-    "macos_arm64",
-    "windows_amd64",
-    "windows_arm64",
-]
+PLATFORMS = {
+    "linux_arm64_musl": "//:release_linux_arm64_musl",
+    "linux_amd64_musl": "//:release_linux_amd64_musl",
+    "macos_amd64": "@llvm//platforms:macos_amd64",
+    "macos_arm64": "@llvm//platforms:macos_arm64",
+    "windows_amd64": "//:release_windows_amd64",
+    "windows_arm64": "//:release_windows_arm64",
+}
 
 # Match Cargo's Windows linker behavior so Bazel-built binaries and tests use
 # the same stack reserve on both Windows ABIs and resolve UCRT imports on MSVC.
@@ -54,17 +54,17 @@ MACOS_WEBRTC_RUSTC_LINK_FLAGS = select({
 })
 
 def multiplatform_binaries(name, platforms = PLATFORMS):
-    for platform in platforms:
+    for platform_name, platform_label in platforms.items():
         platform_data(
-            name = name + "_" + platform,
-            platform = "@llvm//platforms:" + platform,
+            name = name + "_" + platform_name,
+            platform = platform_label,
             target = name,
             tags = ["manual"],
         )
 
     native.filegroup(
         name = "release_binaries",
-        srcs = [name + "_" + platform for platform in platforms],
+        srcs = [name + "_" + platform for platform in platforms.keys()],
         tags = ["manual"],
     )