ci coverage

Author: rauhul

.github/workflows/pull_request.yml

@@ -10,6 +10,19 @@ jobs:
     uses: swiftlang/github-workflows/.github/workflows/swift_package_test.yml@main
     with:
       linux_exclude_swift_versions: '[{"swift_version": "5.8"}]'
+      enable_macos_checks: true
+      swift_flags: "-Xbuild-tools-swiftc -DSYSTEM_CI"
+  
+  build-abi-stable:
+    name: Build ABI Stable
+    uses: swiftlang/github-workflows/.github/workflows/swift_package_test.yml@main
+    with:
+      enable_linux_checks: false
+      enable_macos_checks: true
+      enable_windows_checks: false
+      macos_build_command: "xcrun swift build --build-tests"
+      swift_flags: "-Xbuild-tools-swiftc -DSYSTEM_CI -Xbuild-tools-swiftc -DSYSTEM_ABI_STABLE"
+
   soundness:
     name: Soundness
     uses: swiftlang/github-workflows/.github/workflows/soundness.yml@main

Package.swift

@@ -29,7 +29,7 @@ struct Available {
   }
 
   var swiftSetting: SwiftSetting {
-    #if SWIFT_SYSTEM_ABI_STABLE
+    #if SYSTEM_ABI_STABLE
     // Use availability matching Darwin API.
     let availability = self.osAvailability
     #else
@@ -67,7 +67,7 @@ let availability: [Available] = [
 
 let swiftSettingsAvailability = availability.map(\.swiftSetting)
 
-#if SWIFT_SYSTEM_CI
+#if SYSTEM_CI
 let swiftSettingsCI: [SwiftSetting] = [
   .unsafeFlags([
     "-library-level=api",
@@ -91,7 +91,7 @@ let cSettings: [CSetting] = [
   .define("_CRT_SECURE_NO_WARNINGS", .when(platforms: [.windows])),
 ]
 
-#if SYSTEM_DARWIN
+#if SYSTEM_ABI_STABLE
 let platforms: [SupportedPlatform] = [
   .macOS("26"),
   .iOS("26"),