⚗️ experiment with dedicated workflow run

Signed-off-by: burgholzer <[email protected]>

.github/workflows/cd.yml

@@ -12,6 +12,34 @@ jobs:
     name: 🐍 Packaging
     uses: cda-tum/mqt-workflows/.github/workflows/[email protected]
 
+  experimental-free-threading:
+    name: 🧵 Free Threading
+    runs-on: windows-latest
+    steps:
+      # check out the repository (including submodules and all history)
+      - uses: actions/checkout@v4
+        with:
+          submodules: recursive
+          fetch-depth: 0
+      # set up MSVC development environment (Windows only)
+      - uses: ilammy/msvc-dev-cmd@v1
+      - name: Setup ccache
+        uses: Chocobo1/setup-ccache-action@v1
+        with:
+          prepend_symlinks_to_path: false
+          windows_compile_environment: msvc
+          override_cache_key: wheels-${{ matrix.runs-on }}-experimental
+      - uses: yezz123/setup-uv@v4
+      - name: Install Python 3.13t from nuget
+        run: |
+          nuget.exe install python-freethreaded -Version 3.13.0-rc1 -FallbackSource https://api.nuget.org/v3/index.json -OutputDirectory 'C:\Users\runneradmin\AppData\Local\test\Cache\nuget-cpython'
+      - name: Setup venv
+        run: |
+          uv venv --python 'C:\Users\runneradmin\AppData\Local\test\Cache\nuget-cpython\python-freethreaded.3.13.0-rc1\tools\python.exe'
+      - name: Running install
+        run: |
+          uv pip install -v .
+
   deploy:
     if: github.event_name == 'release' && github.event.action == 'published'
     name: 🚀 Deploy to PyPI