CI automatically find mklvars.sh from installed intel-mkl

.github/workflows/pytests.yml

@@ -53,14 +53,14 @@ jobs:
           # add signed entry to apt sources and configure the APT client to use Intel repository:
           echo "deb [signed-by=/usr/share/keyrings/oneapi-archive-keyring.gpg] https://apt.repos.intel.com/oneapi all main" | sudo tee /etc/apt/sources.list.d/oneAPI.list
           sudo apt update
-          echo "apt list | grep intel"
-          sudo apt list | grep intel
-          echo "try to install intel-mkl"
           sudo apt install intel-mkl
 
       - name: Install phono3py from source
         run: |
-            source /opt/intel/compilers_and_libraries_2018.2.199/linux/mkl/bin/mklvars.sh intel64
+            echo "mklvars in"
+            dpkg -L intel-mkl | grep mklvars.sh
+            mklvars=$( dpkg -L intel-mkl | egrep '/mklvars.sh$' )
+            source $mklvars intel64
 
             git clone https://github.com/phonopy/phonopy
             cd phonopy