CI: Use conda-incubator/setup-miniconda

.github/workflows/ci_np2.yml

@@ -12,21 +12,11 @@ jobs:
       max-parallel: 5
 
     steps:
-    - uses: actions/checkout@v4
-    - name: Set up Python
-      uses: actions/setup-python@v5
+    - uses: conda-incubator/setup-miniconda@v3
       with:
+        auto-update-conda: true
+        environment-file: environment_np2.yml
         python-version: '3.13'
-        allow-prereleases: true
-    - name: Add conda to system path
-      run: |
-        # $CONDA is an environment variable pointing to the root of the miniconda directory
-        echo $CONDA/bin >> $GITHUB_PATH
-    - name: Install dependencies
-      run: |
-        conda install conda-forge::libmamba conda-forge::libarchive
-        conda install -c numba numba=0.61.0rc1
-        conda env update --file environment_np2.yml --name base
     - name: Conda info
       shell: bash -l {0}
       run: |

environment_np2.yml

@@ -7,7 +7,7 @@ dependencies:
   - numpy>=2
   - scipy
   - pandas
-  # - numba
+  - numba=0.61.0rc1
   - sympy
   - ipython
   - flake8