chore: speed up CI

.github/workflows/ci.yaml

@@ -19,39 +19,28 @@ jobs:
     steps:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5
 
-      - name: Set up Python ${{ matrix.python-version }} on ${{ matrix.os }}
-        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065
-        with:
-          python-version: ${{ matrix.python-version }}
-          allow-prereleases: true
-
       - name: Install uv
         uses: astral-sh/setup-uv@d0d8abe699bfb85fec6de9f7adb5ae17292296ff
+        with:
+          enable-cache: true
+          cache-dependency-glob: uv.lock
 
       - name: Create virtual environment
-        run: uv venv .venv
+        run: uv venv --python ${{ matrix.python-version }}
 
-      - name: Add venv to PATH (Linux/macOS)
-        if: runner.os != 'Windows'
-        run: |
-          echo "VIRTUAL_ENV=.venv" >> $GITHUB_ENV
-          echo "$PWD/.venv/bin" >> $GITHUB_PATH
-
-      - name: Add venv to PATH (Windows)
-        if: runner.os == 'Windows'
-        shell: pwsh
+      - name: Install dependencies with CPU-only torch
+        shell: bash
         run: |
-          "VIRTUAL_ENV=.venv" >> $env:GITHUB_ENV
-          "$pwd\.venv\Scripts" >> $env:GITHUB_PATH
-
-      - name: Install dependencies
-        run: make install-no-pre-commit
+          uv export --frozen --all-extras --no-hashes --no-emit-project \
+            | grep -vE '^(nvidia-|cuda-|triton==)' > ci-requirements.txt
+          uv pip install -r ci-requirements.txt --torch-backend cpu
+          uv pip install --no-deps -e .
 
       - name: Run tests under coverage
         shell: bash
         run: |
-          coverage run --source=model2vec -m pytest --ignore=tests/integration
-          coverage report
+          uv run --no-sync coverage run --source=model2vec -m pytest --ignore=tests/integration
+          uv run --no-sync coverage report
 
       - name: Upload results to Codecov
         uses: codecov/codecov-action@b9fd7d16f6d7d1b5d2bec1a2887e65ceed900238