Fixes for Xcode build with artifact bundle

Author: DePasqualeOrg

.github/actions/select-xcode/action.yml

@@ -1,9 +1,11 @@
 name: Select Xcode with Swift 6.2+
 description: >
-  Select the newest Xcode 26+ install on the runner so a swift-tools-version
+  Select an installed Xcode 26+ on the runner so a swift-tools-version
   6.2 Package.swift resolves. macos-latest currently defaults to Xcode 16.4,
   which ships Swift 6.1.0 and rejects 6.2 manifests with
   "is using Swift tools version 6.2.0 but the installed version is 6.1.0".
+  By default picks the newest installed Xcode 26+; pass `version` to pin
+  a specific major.minor (e.g. `26.3`) for matrix coverage.
 
 # TODO: remove this action and every `- uses: ./.github/actions/select-xcode`
 # call site once GitHub's macos-latest image defaults to an Xcode that ships
@@ -12,15 +14,25 @@ description: >
 # (look for "(default)" in the Xcode table). When the default version meets
 # the package's swift-tools-version, the explicit selection becomes redundant.
 
+inputs:
+  version:
+    description: >
+      Xcode version glob to match (e.g. "26.3" matches Xcode_26.3*.app).
+      Defaults to "26", which picks the newest Xcode 26+ installed.
+    required: false
+    default: "26"
+
 runs:
   using: composite
   steps:
     - shell: bash
+      env:
+        XCODE_VERSION: ${{ inputs.version }}
       run: |
         set -euo pipefail
-        xcode=$(ls -d /Applications/Xcode_26*.app 2>/dev/null | sort -V | tail -1)
+        xcode=$(ls -d /Applications/Xcode_${XCODE_VERSION}*.app 2>/dev/null | sort -V | tail -1)
         if [[ -z "$xcode" ]]; then
-            echo "No Xcode 26+ installed on this runner image." >&2
+            echo "No Xcode matching /Applications/Xcode_${XCODE_VERSION}*.app installed on this runner image." >&2
             ls /Applications | grep -i xcode >&2 || true
             exit 1
         fi

.github/workflows/ci.yml

@@ -12,11 +12,28 @@ permissions:
 
 jobs:
     test-pinned:
-        name: Test (pinned artifactbundle)
-        runs-on: macos-latest
+        # Matrix Xcode coverage to catch issues like the SE-0482 artifactbundle
+        # module-map import failure reported on Xcode 26.3 (issue #33), which
+        # the "newest 26+" picker on macos-latest does not exercise.
+        # Xcode 26.4+ requires macOS 26 (Tahoe), so it must run on macos-26;
+        # 26.3 is the highest Xcode that installs on macos-15 (Sequoia).
+        name: Test (pinned artifactbundle, Xcode ${{ matrix.xcode }})
+        strategy:
+            fail-fast: false
+            matrix:
+                include:
+                    - os: macos-15
+                      xcode: "26.3"
+                    - os: macos-26
+                      xcode: "26.4"
+                    - os: macos-26
+                      xcode: "26.5"
+        runs-on: ${{ matrix.os }}
         steps:
             - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
             - uses: ./.github/actions/select-xcode
+              with:
+                  version: ${{ matrix.xcode }}
             - name: Run tests
               run: swift test
 

Sources/Tokenizers/RustTokenizer.swift

@@ -1,7 +1,7 @@
 // Copyright © Anthony DePasquale
 
 import Foundation
-@_implementationOnly import TokenizersFFI
+import TokenizersFFI
 
 private struct RustTokenizerDescriptor {
     let runtimeConfiguration: TokenizerRuntimeConfiguration