[ci] Use uv for pip installs across CI workflows (#16451)

.github/actions/restore-python/action.yml

@@ -27,6 +27,14 @@ runs:
         path: venv
         # yamllint disable-line rule:line-length
         key: ${{ runner.os }}-${{ steps.python.outputs.python-version }}-venv-${{ inputs.cache-key }}
+    - name: Set up uv
+      # Only needed on cache miss to populate the venv. ``uv pip install``
+      # detects the activated venv via ``VIRTUAL_ENV`` so the venv layout
+      # downstream jobs rely on is preserved.
+      if: steps.cache-venv.outputs.cache-hit != 'true'
+      uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
+      with:
+        enable-cache: true
     - name: Create Python virtual environment
       if: steps.cache-venv.outputs.cache-hit != 'true' && runner.os != 'Windows'
       shell: bash
@@ -34,8 +42,8 @@ runs:
         python -m venv venv
         source venv/bin/activate
         python --version
-        pip install -r requirements.txt -r requirements_test.txt
+        uv pip install -r requirements.txt -r requirements_test.txt
-        pip install -e .
+        uv pip install -e .
     - name: Create Python virtual environment
       if: steps.cache-venv.outputs.cache-hit != 'true' && runner.os == 'Windows'
       shell: bash
@@ -43,5 +51,5 @@ runs:
         python -m venv venv
         source ./venv/Scripts/activate
         python --version
-        pip install -r requirements.txt -r requirements_test.txt
+        uv pip install -r requirements.txt -r requirements_test.txt
-        pip install -e .
+        uv pip install -e .

.github/workflows/ci-api-proto.yml

@@ -26,6 +26,12 @@ jobs:
         uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
         with:
           python-version: "3.11"
+      - name: Set up uv
+        # ``--system`` (below) installs into the setup-python interpreter;
+        # no venv is created or restored by this workflow.
+        uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
+        with:
+          enable-cache: true
 
       - name: Install apt dependencies
         run: |
@@ -34,7 +40,7 @@ jobs:
           sudo apt install -y protobuf-compiler
           protoc --version
       - name: Install python dependencies
-        run: pip install aioesphomeapi -c requirements.txt -r requirements_dev.txt
+        run: uv pip install --system aioesphomeapi -c requirements.txt -r requirements_dev.txt
       - name: Generate files
         run: script/api_protobuf/api_protobuf.py
       - name: Check for changes

.github/workflows/ci.yml

@@ -52,14 +52,22 @@ jobs:
           path: venv
           # yamllint disable-line rule:line-length
           key: ${{ runner.os }}-${{ steps.python.outputs.python-version }}-venv-${{ steps.cache-key.outputs.key }}
+      - name: Set up uv
+        # Only needed on cache miss to populate the venv. ``uv pip install``
+        # detects the activated venv via ``VIRTUAL_ENV`` so downstream jobs
+        # that ``. venv/bin/activate`` see an identical layout.
+        if: steps.cache-venv.outputs.cache-hit != 'true'
+        uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
+        with:
+          enable-cache: true
       - name: Create Python virtual environment
         if: steps.cache-venv.outputs.cache-hit != 'true'
         run: |
           python -m venv venv
           . venv/bin/activate
           python --version
-          pip install -r requirements.txt -r requirements_dev.txt -r requirements_test.txt pre-commit
+          uv pip install -r requirements.txt -r requirements_dev.txt -r requirements_test.txt pre-commit
-          pip install -e .
+          uv pip install -e .
 
   pylint:
     name: Check pylint
@@ -351,14 +359,20 @@ jobs:
         with:
           path: venv
           key: ${{ runner.os }}-${{ steps.python.outputs.python-version }}-venv-${{ needs.common.outputs.cache-key }}
+      - name: Set up uv
+        # Only needed on cache miss to populate the venv.
+        if: steps.cache-venv.outputs.cache-hit != 'true'
+        uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
+        with:
+          enable-cache: true
       - name: Create Python virtual environment
         if: steps.cache-venv.outputs.cache-hit != 'true'
         run: |
           python -m venv venv
           . venv/bin/activate
           python --version
-          pip install -r requirements.txt -r requirements_test.txt
+          uv pip install -r requirements.txt -r requirements_test.txt
-          pip install -e .
+          uv pip install -e .
       - name: Register matcher
         run: echo "::add-matcher::.github/workflows/matchers/pytest.json"
       - name: Run integration tests