Update CI

Author: pedrovgs

.github/workflows/wasm.yml

@@ -3,12 +3,28 @@ name: wasm
 on:
   push:
 
+env:
+  # Required Swift toolchain version for WASM builds
+  # Must match REQUIRED_TOOLCHAIN_VERSION in scripts/build-and-test-wasm.sh
+  SWIFT_TOOLCHAIN_VERSION: "DEVELOPMENT-SNAPSHOT-2025-11-03-a"
+
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
 
+      # Install the specific Swift development snapshot required for WASM builds
+      - name: Install Swift Toolchain
+        run: |
+          SWIFT_URL="https://download.swift.org/development/ubuntu2404/swift-${SWIFT_TOOLCHAIN_VERSION}/swift-${SWIFT_TOOLCHAIN_VERSION}-ubuntu24.04.tar.gz"
+          echo "Downloading Swift toolchain from: $SWIFT_URL"
+          curl -sL "$SWIFT_URL" | tar xz --strip-components=1 -C /opt
+          echo "/opt/usr/bin" >> $GITHUB_PATH
+
+      - name: Verify Swift Installation
+        run: swift --version
+
       # Wasmtime is required because `swift test` doesn't work for WebAssembly targets.
       # For WASM, we must build tests separately and run them with a WASM runtime.
       # See: https://book.swiftwasm.org/getting-started/testing.html

scripts/build-and-test-wasm.sh

@@ -41,7 +41,20 @@ setup_swift() {
     echo "📦 Setting up Swift..."
     echo "   Required toolchain: $REQUIRED_TOOLCHAIN_VERSION"
 
-    # Check for local SwiftWasm toolchain first (macOS development with newer SDK)
+    # First, check if Swift in PATH is the required development snapshot (CI environment)
+    if command -v swift &> /dev/null; then
+        local VERSION_OUTPUT=$(swift --version 2>/dev/null | head -1)
+        if echo "$VERSION_OUTPUT" | grep -q "$REQUIRED_TOOLCHAIN_VERSION"; then
+            SWIFT_CMD="swift"
+            SWIFT_VERSION="dev"
+            echo "✅ Using required toolchain from PATH"
+            echo "   Version: $VERSION_OUTPUT"
+            echo ""
+            return 0
+        fi
+    fi
+
+    # Check for local SwiftWasm toolchain (macOS development with newer SDK)
     TOOLCHAIN_DIR="$HOME/Library/Developer/Toolchains"
     if [ -d "$TOOLCHAIN_DIR" ]; then
         # Look for the specific required toolchain version
@@ -62,26 +75,19 @@ setup_swift() {
                 echo "❌ Toolchain found but swift binary not executable: $TOOLCHAIN_SWIFT"
                 exit 1
             fi
-        else
-            echo "⚠️  Required toolchain not found locally: $WASM_TOOLCHAIN"
-            echo "   Checked: $TOOLCHAIN_DIR/$WASM_TOOLCHAIN"
-            echo "   Will try system Swift..."
         fi
     fi
 
-    # Use system Swift (CI environment)
+    # No matching toolchain found
+    echo "❌ Required Swift toolchain not found: $REQUIRED_TOOLCHAIN_VERSION"
+    echo ""
+    echo "   For macOS: Install the toolchain to ~/Library/Developer/Toolchains/"
+    echo "   For Linux/CI: Install from https://download.swift.org/development/"
+    echo ""
     if command -v swift &> /dev/null; then
-        SWIFT_CMD="swift"
-        local VERSION_OUTPUT=$($SWIFT_CMD --version 2>/dev/null)
-        # Extract version number (e.g., "6.1.3" from "Swift version 6.1.3")
-        SWIFT_VERSION=$(echo "$VERSION_OUTPUT" | grep -oE "Swift version [0-9]+\.[0-9]+(\.[0-9]+)?" | head -1 | sed 's/Swift version //')
-        echo "✅ Using system Swift"
-        echo "   Version: $SWIFT_VERSION"
-        echo ""
-        return 0
+        echo "   Current Swift in PATH:"
+        swift --version 2>/dev/null | head -1 | sed 's/^/   /'
     fi
-
-    echo "❌ No Swift installation found"
     exit 1
 }