Build and test on macOS 27 with Xcode 27; 0.16.7

.github/workflows/ci.yml

@@ -14,17 +14,42 @@ concurrency:
 
 jobs:
   swift:
-    name: Swift build + tests (macOS)
-    runs-on: macos-15
+    name: Swift build + tests (${{ matrix.name }})
+    runs-on: ${{ matrix.runner }}
     timeout-minutes: 45
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - name: macOS 15, Xcode 26.2
+            slug: macos15
+            runner: macos-15
+            xcode: "26.2"
+          # The OS most users are on: build with its SDK and run the tests on
+          # it. GitHub names this image after its Xcode; it runs macOS 27.
+          - name: macOS 27, Xcode 27
+            slug: macos27
+            runner: xcode-27
+            xcode: "27"
     steps:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Select Xcode
+      - name: Select Xcode ${{ matrix.xcode }}
         run: |
-          sudo xcode-select -s /Applications/Xcode_26.2.app 2>/dev/null \
-            || sudo xcode-select -s "$(ls -d /Applications/Xcode_2*.app | sort -V | tail -1)"
+          sw_vers
+          # The newest release of this Xcode, not a beta. A version-named path
+          # can be a link to a beta (Xcode_27.2.app -> Xcode_27.2_beta.app),
+          # so judge each by where it really points.
+          XCODE="$(for app in /Applications/Xcode_${{ matrix.xcode }}*.app; do realpath "$app"; done \
+            | grep -viE 'beta|release_candidate|_rc' | sort -uV | tail -1)"
+          if [ -z "$XCODE" ]; then
+            echo "::error::no release of Xcode ${{ matrix.xcode }} on this runner"
+            ls -l /Applications | grep Xcode
+            exit 1
+          fi
+          echo "Using $XCODE"
+          sudo xcode-select -s "$XCODE"
           xcodebuild -version
 
       - name: Install XcodeGen
@@ -37,8 +62,8 @@ jobs:
         uses: actions/cache@v4
         with:
           path: build/SourcePackages
-          key: spm-${{ runner.os }}-${{ hashFiles('project.yml') }}
-          restore-keys: spm-${{ runner.os }}-
+          key: spm-${{ matrix.slug }}-${{ hashFiles('project.yml') }}
+          restore-keys: spm-${{ matrix.slug }}-
 
       - name: Resolve Swift package dependencies
         run: |
@@ -122,7 +147,7 @@ jobs:
         if: always()
         uses: actions/upload-artifact@v4
         with:
-          name: xcodebuild-logs
+          name: xcodebuild-logs-${{ matrix.slug }}
           path: |
             build/xcodebuild-build.log
             build/xcodebuild-test.log
@@ -133,7 +158,7 @@ jobs:
         if: failure()
         uses: actions/upload-artifact@v4
         with:
-          name: test-results
+          name: test-results-${{ matrix.slug }}
           path: build/TestResults.xcresult
           if-no-files-found: ignore
 

.github/workflows/release.yml

@@ -43,23 +43,44 @@ jobs:
   # One DMG per architecture rather than a universal app: each download is
   # half the size, and the Intel build says plainly that it cannot run the
   # local MLX engines.
+  #
+  # Apple silicon is built with Xcode 27 on macOS 27, so the app is linked
+  # against the macOS 27 SDK and gets that system's behavior rather than a
+  # compatibility mode. macOS 27 does not run on Intel Macs, so the Intel
+  # build stays on the toolchain of the last system they run.
   build:
     name: Build DMG (${{ matrix.arch }})
     needs: [version, test]
-    runs-on: macos-15
+    runs-on: ${{ matrix.runner }}
     strategy:
       matrix:
-        arch: [arm64, x86_64]
+        include:
+          - arch: arm64
+            runner: xcode-27
+            xcode: "27"
+          - arch: x86_64
+            runner: macos-15
+            xcode: "26.2"
     env:
       VERSION: ${{ needs.version.outputs.version }}
     steps:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Select Xcode
+      - name: Select Xcode ${{ matrix.xcode }}
         run: |
-          sudo xcode-select -s /Applications/Xcode_26.2.app 2>/dev/null \
-            || sudo xcode-select -s "$(ls -d /Applications/Xcode_2*.app | sort -V | tail -1)"
+          # The newest release of this Xcode, not a beta. A version-named path
+          # can be a link to a beta (Xcode_27.2.app -> Xcode_27.2_beta.app),
+          # so judge each by where it really points.
+          XCODE="$(for app in /Applications/Xcode_${{ matrix.xcode }}*.app; do realpath "$app"; done \
+            | grep -viE 'beta|release_candidate|_rc' | sort -uV | tail -1)"
+          if [ -z "$XCODE" ]; then
+            echo "::error::no release of Xcode ${{ matrix.xcode }} on this runner"
+            ls -l /Applications | grep Xcode
+            exit 1
+          fi
+          echo "Using $XCODE"
+          sudo xcode-select -s "$XCODE"
           xcodebuild -version
 
       - name: Install XcodeGen

Core/Pipeline/TranscriptBuffer.swift

@@ -94,7 +94,7 @@ final class TranscriptBuffer: ObservableObject {
 /// the only signal, so a line whose translation failed, came back empty, was
 /// covered by a later T3PO translation or was never sent (translation off)
 /// showed as translating forever.
-enum LiveTranslationState: Hashable {
+enum LiveTranslationState: Hashable, Sendable {
     /// Not sent: translation was off, or the line's sentence has not ended.
     case notSent
     case pending
@@ -105,7 +105,7 @@ enum LiveTranslationState: Hashable {
     case merged
 }
 
-struct LiveSegment: Identifiable, Hashable {
+struct LiveSegment: Identifiable, Hashable, Sendable {
     let id: Int64       // = rowId
     let rowId: Int64
     let startMs: Int64

Features/Shared/SessionPresentation.swift

@@ -102,6 +102,9 @@ struct SentenceBlock<Line: Identifiable>: Identifiable {
     var id: Line.ID { lines[0].id }
 }
 
+/// So the rows' nonisolated `==` can read a block off a main-actor view.
+extension SentenceBlock: Sendable where Line: Sendable {}
+
 extension Array where Element == Segment {
     var sentenceBlocks: [SentenceBlock<Segment>] {
         SentenceGroups.group(self).map { SentenceBlock(lines: $0) }

project.yml

@@ -15,8 +15,8 @@ settings:
     SWIFT_STRICT_CONCURRENCY: complete
     SWIFT_TREAT_WARNINGS_AS_ERRORS: "NO"
     ENABLE_USER_SCRIPT_SANDBOXING: NO
-    MARKETING_VERSION: "0.16.6"
-    CURRENT_PROJECT_VERSION: "24"
+    MARKETING_VERSION: "0.16.7"
+    CURRENT_PROJECT_VERSION: "25"
     DEAD_CODE_STRIPPING: YES
 
 packages: