Update to Swift 6.2 (#195)

This PR updates to Swift 6.2 and resolves a build error after updating
to Swift 6.2-snapshot in
https://github.com/apple/containerization/pull/94.

.github/workflows/common.yml

@@ -11,7 +11,7 @@ on:
 jobs:
   buildAndTest:
     name: Build and test the project
-    timeout-minutes: 30
+    timeout-minutes: 60
     runs-on: [self-hosted, macos, sequoia, ARM64]
     permissions:
       contents: read
@@ -24,10 +24,6 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Update containerization
-        run: |
-          /usr/bin/swift package update containerization
-
       - name: Check formatting
         run: |
           ./scripts/install-hawkeye.sh
@@ -47,7 +43,9 @@ jobs:
             git diff --name-only -- .
             false
           fi
-  
+        env:
+          DEVELOPER_DIR: "/Applications/Xcode_26.b1.app/Contents/Developer"
+
       - name: Set build configuration
         run: |
           echo "BUILD_CONFIGURATION=debug" >> $GITHUB_ENV
@@ -60,7 +58,7 @@ jobs:
           make container dsym docs
           tar cfz _site.tgz _site
         env:
-          DEVELOPER_DIR: "/Applications/Xcode_16.3.app/Contents/Developer"
+          DEVELOPER_DIR: "/Applications/Xcode_26.b1.app/Contents/Developer"
 
       - name: Create package
         run: |
@@ -73,7 +71,7 @@ jobs:
           launchctl setenv HTTP_PROXY $HTTP_PROXY
           make test cleancontent install-kernel integration
         env:
-          DEVELOPER_DIR: "/Applications/Xcode_16.3.app/Contents/Developer"
+          DEVELOPER_DIR: "/Applications/Xcode_26.b1.app/Contents/Developer"
           CURRENT_SDK: y # explicitly repeated due to local env block
 
       - name: Save documentation artifact

Package.resolved

@@ -1,5 +1,5 @@
 {
-  "originHash" : "21dad499f34492edb861e54fe1e03ee3b00aa3d7371af6b09253bf04495427b9",
+  "originHash" : "4ac93777a9a369fb7c46f1af4cd15c516926a8f4b23679f1ee2bc40b9a422313",
   "pins" : [
     {
       "identity" : "async-http-client",
@@ -87,8 +87,8 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/apple/swift-atomics.git",
       "state" : {
-        "revision" : "cd142fd2f64be2100422d658e7411e39489da985",
-        "version" : "1.2.0"
+        "revision" : "b601256eab081c0f92f059e12818ac1d4f178ff7",
+        "version" : "1.3.0"
       }
     },
     {

Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version: 6.0
+// swift-tools-version: 6.2
 //===----------------------------------------------------------------------===//
 // Copyright © 2025 Apple Inc. and the container project authors. All rights reserved.
 //

scripts/install-init.sh

@@ -13,18 +13,18 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+SWIFT="/usr/bin/swift"
+IMAGE_NAME="vminit:latest"
 DESTDIR="${1:-$(git rev-parse --show-toplevel)/bin}"
 mkdir -p "${DESTDIR}"
 
-IMAGE_NAME="vminit:latest"
-
-CONTAINERIZATION_VERSION="${CONTAINERIZATION_VERSION:-$(swift package show-dependencies --format json | jq -r '.dependencies[] | select(.identity == "containerization") | .version')}"
+CONTAINERIZATION_VERSION="${CONTAINERIZATION_VERSION:-$(${SWIFT} package show-dependencies --format json | jq -r '.dependencies[] | select(.identity == "containerization") | .version')}"
 if [ ! -z "${CONTAINERIZATION_PATH}" -o "${CONTAINERIZATION_VERSION}" == "unspecified" ] ; then
-	CONTAINERIZATION_PATH="${CONTAINERIZATION_PATH:-$(swift package show-dependencies --format json | jq -r '.dependencies[] | select(.identity == "containerization") | .path')}"
+	CONTAINERIZATION_PATH="${CONTAINERIZATION_PATH:-$(${SWIFT} package show-dependencies --format json | jq -r '.dependencies[] | select(.identity == "containerization") | .path')}"
 	echo "Creating InitImage"
 	make -C ${CONTAINERIZATION_PATH} init
 	${CONTAINERIZATION_PATH}/bin/cctl images save -o /tmp/init.tar ${IMAGE_NAME}
-	# sleep because commands after stop and start are racy
+	# Sleep because commands after stop and start are racy.
 	bin/container system stop && sleep 3 && bin/container system start && sleep 3
 	bin/container i load -i /tmp/init.tar
 	rm /tmp/init.tar