Set IDEPackageEnablePrebuilts NO

Author: andrewheard

.github/workflows/common.yml

@@ -68,6 +68,8 @@ jobs:
       - uses: actions/checkout@v4
       - name: Xcode
         run: sudo xcode-select -s /Applications/Xcode_16.4.app/Contents/Developer
+      - name: Disable SPM Prebuilts
+        run: defaults write com.apple.dt.Xcode IDEPackageEnablePrebuilts NO
       - name: Generate Swift Package.resolved
         id: swift_package_resolve
         run: swift package resolve
@@ -112,11 +114,13 @@ jobs:
       run: ${{ inputs.setup_command }}
     - name: Initialize xcodebuild
       run: scripts/setup_spm_tests.sh
+    - name: Disable SPM Prebuilts
+      run: defaults write com.apple.dt.Xcode IDEPackageEnablePrebuilts NO
     - uses: nick-fields/retry@ce71cc2ab81d554ebbe88c79ab5975992d79ba08 # v3
       if: contains(join(inputs.platforms), matrix.platform) || matrix.os == 'macos-14'
       with:
         timeout_minutes: 15
-        max_attempts: 3
+        max_attempts: 1 # TODO: Change back to 3 after testing
         retry_wait_seconds: 120
         command: |
           ./scripts/build.sh \