install packages from intel channel for build using pip

Author: vtavana

.github/workflows/build_pip.yaml

@@ -42,7 +42,8 @@ jobs:
 
       - name: Install Compiler and MKL
         run: |
-          conda install mkl-devel tbb-devel dpcpp_linux-64
+          CHANNELS="-c https://software.repos.intel.com/python/conda -c conda-forge --override-channels"        
+          conda install $CHANNELS mkl-devel tbb-devel dpcpp_linux-64
           python -c "import sys; print(sys.executable)"
           which python
 
@@ -52,7 +53,7 @@ jobs:
           pip install --no-cache-dir numpy ${{ matrix.use_pre }}
           echo "CONDA_PREFFIX is '${CONDA_PREFIX}'"
           export MKLROOT=${CONDA_PREFIX}
-          pip install . --no-build-isolation --no-deps --verbose
+          CC=icx pip install . --no-build-isolation --no-deps --verbose
           pip install --no-cache-dir pytest
           pip list
           # mkl_umath cannot be installed in editable mode, we need