enable caching. use venv.

Author: matsumotosan

.github/workflows/ci-tests-pytorch.yml

@@ -35,9 +35,6 @@ defaults:
   run:
     shell: bash
 
-env:
-  UV_SYSTEM_PYTHON: 1
-
 jobs:
   pl-cpu:
     runs-on: ${{ matrix.os }}
@@ -82,12 +79,7 @@ jobs:
         uses: astral-sh/setup-uv@v6
         with:
           python-version: ${{ matrix.config.python-version || '3.9' }}
-
-      - name: Restore uv cache
-        uses: actions/cache@v4
-        with:
-          path: ${{ env.UV_CACHE_DIR }}
-          key: uv-cache-${{ matrix.os }}-${{ matrix.config.python-version || '3.9' }}
+          enable-cache: true
 
       - name: Basic setup
         run: uv pip install -q -r .actions/requirements.txt