fix: don't set env vars for view when installing env

install_spack_env.sh

@@ -76,7 +76,7 @@ cp /tmp/spack.yaml $SPACK_ROOT/var/spack/environments/$EBRAINS_SPACK_ENV/
 rm $SPACK_ROOT/var/spack/environments/$EBRAINS_SPACK_ENV/spack.lock || echo "No spack.lock file"
 
 # activate environment
-spack env activate $EBRAINS_SPACK_ENV
+spack env activate --without-view $EBRAINS_SPACK_ENV
 
 # fetch all sources
 spack concretize --fresh --test root