pinned spack arch in spack/etc/spack/packages.yaml and made code

adaptations to reflect that change

README.md

@@ -7,6 +7,7 @@ Build and distribute software tools with Spack for the EBRAINS Collaboratory Lab
 ```
 #update modulepath of JupterLab container to include spack arch modulefiles path
 module use /srv/test-build/spack/share/spack/modules/linux-centos7-broadwell/
+module use /srv/test-build/spack/share/spack/modules/linux-centos7-x86_64/
 
 #start JupyterLab kernel made for spack
 jupyter kernelspec install --user /srv/jupyterlab_kernels/int/release20210930/spack_python_kernel_release_20210930/

create_JupyterLab_kernel.sh

@@ -19,7 +19,7 @@ spack repo add /srv/$INSTALLATION_ROOT/ebrains-spack-builds
 # no need to activate as the env is already activated in the context it is used
 #spack env activate $SPACKIFIED_ENV
 
-module use /srv/$INSTALLATION_ROOT/spack/share/spack/modules/linux-centos7-broadwell/
+module use /srv/$INSTALLATION_ROOT/spack/share/spack/modules/linux-centos7-x86_64/
 source /srv/$INSTALLATION_ROOT/spack/var/spack/environments/$SPACKIFIED_ENV/loads
 # add also user's .local python3.8 packages to allow package installation at runtime
 # by the user using pip

load_sim_tools.sh

@@ -18,7 +18,7 @@ cd /srv/$INSTALLATION_ROOT
 spack repo add ebrains-spack-builds
 spack env activate $SPACKIFIED_ENV
 
-module use /srv/$INSTALLATION_ROOT/spack/share/spack/modules/linux-centos7-broadwell/
+module use /srv/$INSTALLATION_ROOT/spack/share/spack/modules/linux-centos7-x86_64/
 source /srv/$INSTALLATION_ROOT/spack/var/spack/environments/$SPACKIFIED_ENV/loads
 
 echo "Everything ready!"