reorder the conda installs andcreate a conda environment

.github/workflows/main.yaml

@@ -32,10 +32,12 @@ jobs:
           python-version: ${{ matrix.python-version }}
       - name: Install dependencies
         run: |
-          python -m pip install --upgrade pip
-          pip install pytest
+          sudo apt-get update
+          sudo apt-get install -y conda
+          conda create -n test-env python=${{ matrix.python-version }} -y
+          conda activate test-env
+          conda install -c bioconda -c conda-forge pip pytest fastspar>=0.0.7 armadillo=8 "scipy<=1.10.1,>=1.8.0" numpy networkx biom-format pandas scikit-bio statsmodels h5py
           if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
-          conda install -c bioconda -c conda-forge "fastspar>=0.0.7" armadillo=8 "scipy<=1.10.1,>=1.8.0"
           python setup.py install
 
       - name: Test with pytest