clean up package installation

.github/workflows/main.yml

@@ -156,14 +156,13 @@ jobs:
       - name: Setup Conda environment
         shell: bash -l {0}
         run: |
-          conda install numpy cython pip pytest hdf5 libnetcdf cftime netcdf4 coverage --strict-channel-priority
+          conda install numpy cython pip pytest hdf5 libnetcdf cftime netcdf4 coverage coveralls --strict-channel-priority
           pip install -e . --no-deps --force-reinstall
 
       - name: Install dependencies
         shell: bash -l {0}
         run: |
           python -m pip install --upgrade pip wheel
-          pip install coverage pytest coveralls .
 
       - name: Prepare Wind Hindcast data
         shell: bash -l {0}