ci: use micromamba and uv and also install ROOT

.github/workflows/ci.yml

@@ -30,21 +30,23 @@ jobs:
     name: JIT compiled tests for Python ${{ matrix.python-version }}
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5.0.0
-        name: Set up Python ${{ matrix.python-version }}
-
+      - uses: mamba-org/setup-micromamba@v1
+        name: Set up Micromamba environment
         with:
-          python-version: ${{ matrix.python-version }}
-      - name: Install dependencies
+          environment-name: test-env
+      # - name: Install ROOT
+      #   run: |
+      #     micromamba install -c conda-forge root -y
+      - name: Install Python and dependencies
         run: |
+          micromamba install python=${{ matrix.python-version }} pip -c conda-forge -y
           python -m pip install --upgrade pip
           pip install .[dev]
       - name: Test with pytest
         run: |
           coverage run --source=. --omit=".tox/*" --branch -m pytest .
           coverage report
 
-
   tests_eager:
     runs-on: ubuntu-latest
     timeout-minutes: 150
@@ -56,13 +58,16 @@ jobs:
     name: Eager mode tests for Python ${{ matrix.python-version }}
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5.0.0
-        name: Set up Python ${{ matrix.python-version }}
-
+      - uses: mamba-org/setup-micromamba@v1
+        name: Set up Micromamba environment
         with:
-          python-version: ${{ matrix.python-version }}
-      - name: Install dependencies
+          environment-name: test-env
+      # - name: Install ROOT
+      #   run: |
+      #     micromamba install -c conda-forge root -y
+      - name: Install Python and dependencies
         run: |
+          micromamba install python=${{ matrix.python-version }} pip -c conda-forge -y
           python -m pip install --upgrade pip
           pip install .[dev]
       - name: Test with pytest