[breaking] migrate from setuptools to uv (#9673)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: hiyouga <16256802+hiyouga@users.noreply.github.com>

.github/workflows/tests.yml

@@ -7,7 +7,7 @@ on:
       - "main"
     paths:
       - "**/*.py"
-      - "requirements.txt"
+      - "pyproject.toml"
       - "Makefile"
       - ".github/workflows/*.yml"
   pull_request:
@@ -15,7 +15,7 @@ on:
       - "main"
     paths:
       - "**/*.py"
-      - "requirements.txt"
+      - "pyproject.toml"
       - "Makefile"
       - ".github/workflows/*.yml"
 
@@ -68,16 +68,19 @@ jobs:
         with:
           python-version: ${{ matrix.python }}
 
+      - name: Install uv
+        uses: astral-sh/setup-uv@v5
+
       - name: Install dependencies
         run: |
-          python -m pip install --upgrade pip
-          python -m pip install torch torchvision --index-url https://download.pytorch.org/whl/cpu
-          python -m pip install ".[dev]"
+          uv pip install --system torch torchvision --index-url https://download.pytorch.org/whl/cpu
+          uv pip install --system -e "."
+          uv pip install --system -r examples/requirements/dev.txt
 
       - name: Install transformers
         if: ${{ matrix.transformers }}
         run: |
-          python -m pip install "transformers==${{ matrix.transformers }}"
+          uv pip install --system "transformers==${{ matrix.transformers }}"
 
       - name: Cache files
         id: hf-hub-cache