source /afs/psi.ch/sys/spack-rhel7/spack/share/spack/setup-env.sh # can be also include in your .bashrc

spack env list
spack env activate -d <package> # e.g ffbidx all for whole software stack

# Install env if local development, else skip
spack install # -v for verbose

spack load <package>

How to use on Merlin6

source /afs/psi.ch/sys/spack-rhel7/spack/share/spack/setup-env.sh # can be also include in your .bashrc

spack env list
spack env activate -d <package> # e.g ffbidx all for whole software stack

# Install env if local development, else skip
spack install # -v for verbose

spack load <package>

# The OPAL Spack recipe

[Official Spack documentation](https://spack.readthedocs.io/en/latest/)

## Install Spack

```bash
cd /scratch/$USER
git clone -c feature.manyFiles=true https://github.com/spack/spack.git
. spack/share/spack/setup-env.sh

# Add PSI specific recipes
cd OPAL/spack
spack repo add .

Install OPAL@version

spack info opal # Find out which version and which variants you want to set

# Install env if local development, else skip
spack install opal@2022.1.0 # -v for verbose -j 8 for 8 parallel jobs

# Load environment before launching any scripts
spack load opal

sbatch ...

Develop OPAL

spack env activate -d OPAL/spack/env/opal/

# $OPAL_SRC_DIRECTORY is where you did the git clone git@gitlab.psi.ch:OPAL/src.git
spack develop -p $OPAL_SRC_DIRECTORY opal@master

spack install # -v for verbose -j 8 for 8 parallel jobs