diff --git a/systems/mac-arm/config-command-mpi b/systems/mac-arm/config-command-mpi
index bb261fe6..3bc33a59 100644
--- a/systems/mac-arm/config-command-mpi
+++ b/systems/mac-arm/config-command-mpi
@@ -3,12 +3,14 @@
 CXX=mpicxx ../../configure \
 	   --enable-simd=GEN \
 	   --enable-comms=mpi-auto \
-	   --enable-Sp=yes \
 	   --enable-unified=yes \
-	   --prefix /Users/peterboyle/QCD/vtk/Grid/install \
+	   --disable-fermion-reps \
+	   --disable-gparity \
+	   --prefix /Users/peterboyle/QCD/Grid-install \
 	   --with-lime=$CLIME \
 	   --with-openssl=$OPENSSL \
 	   --with-gmp=$GMP \
 	   --with-mpfr=$MPFR \
-	   --disable-debug 
+	   --with-fftw=$FFTW \
+	   --disable-debug
 
diff --git a/systems/mac-arm/sourceme.sh b/systems/mac-arm/sourceme.sh
new file mode 100644
index 00000000..b20af490
--- /dev/null
+++ b/systems/mac-arm/sourceme.sh
@@ -0,0 +1,11 @@
+source /Users/peterboyle/QCD//Spack/spack//share/spack/setup-env.sh
+export FFTW=`spack find --paths fftw    | grep ^fftw   | awk '{print $2}' `
+#export HDF5=`spack find --paths hdf5+cxx   | grep ^hdf5   | awk '{print $2}' `
+export CLIME=`spack find --paths c-lime | grep ^c-lime | awk '{print $2}' `
+export MPFR=`spack find --paths mpfr    | grep ^mpfr  | awk '{print $2}' `
+export OPENSSL=`spack find --paths openssl | grep openssl | awk  '{print $2}' `
+export GMP=`spack find --paths gmp      | grep ^gmp | awk '{print $2}' `
+
+export LD_LIBRARY_PATH=$MPFR/lib:$LD_LIBRARY_PATH
+export LD_LIBRARY_PATH=$GMP/lib:$LD_LIBRARY_PATH
+