Rationalize

.travis.yml

@@ -64,28 +64,20 @@ install:
   - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then
         COMPILERS=clang_osx-64=9.0.1;
         MUMPS=mumps-mpi=5.1.2=haf446c3_1007;
-    elif [[ "$TRAVIS_PYTHON_VERSION" == "3.8" ]]; then
-        COMPILERS=gcc_linux-64;
-        sudo add-apt-repository -y ppa:octave/stable;
-        sudo apt-get update -qq;
-        sudo apt install -y octave;
     else
         COMPILERS=gcc_linux-64;
         MUMPS=mumps-mpi=5.1.2=h5bebb2f_1007;
         sudo add-apt-repository -y ppa:octave/stable;
         sudo apt-get update -qq;
         sudo apt install -y octave;
     fi
-
   - conda install $COMPILERS
   - conda install libblas libopenblas # Prevent 'File exists' error
 
   - if [[ "$TRAVIS_PYTHON_VERSION" == "3.8" ]]; then
-      echo -e "MPI is $MPI";
-      export PETSC_CONFIGURE_OPTIONS='--with-batch --with-mpi=0';
-      conda install mpi4py scipy mpich;
+      conda install nlopt mpi4py scipy mpich;
+      export PETSC_CONFIGURE_OPTIONS='--with-batch';
       pip install petsc petsc4py;
-      conda install nlopt;
     else
       conda install nlopt petsc4py petsc $MUMPS mpi4py scipy $MPI;
     fi