Spack packages for edep-sim + eic-optics

Caveats

This is for an R&D project and not (yet) intended for production.

• [X] Support edep-sim directly depending on eic-opticks
• [ ] Support 3rd party opticks plugin

Quick start

git clone https://github.com/WireCell/edep-opticks-spack.git
spack repo add edep-opticks-spack/edep_opticks/
spack install edepsim+opticks cxxstd=17

To use more cores and speed up the build:

spack install --jobs 32 edepsim+opticks cxxstd=17

Developing

How to set up a developer environment.

Build dependencies with Spack

git clone --branch {version} --depth=2 https://github.com/spack/spack.git
source spack/share/spack/setup-env.sh 
spack compiler find
spack bootstrap now

git clone https://github.com/WireCell/edep-opticks-spack.git
spack repo add edep-opticks-spack/edep_opticks/

spack install edepsim+opticks cxxstd=17

Create development area using a Spack View

A Spack “view” is a tidy directory that symlinks in all files from all required packages and makes an ideal base for development.

mkdir hack && cd hack/

spack view --dependencies yes --exclude edepsim add -i local edepsim@master+opticks cxxstd=17
git clone https://github.com/ClarkMcGrew/edep-sim.git

./local/bin/cmake -S edep-sim -B edep-sim-build \
                  -DCMAKE_INSTALL_PREFIX=$PWD/local \
                  -DCMAKE_INSTALL_RPATH='$ORIGIN/../lib' \
                  -DCMAKE_INSTALL_RPATH_USE_LINK_PATH=ON                    
./local/bin/cmake --build edep-sim-build
./local/bin/cmake --install edep-sim-build
./local/bin/edep-sim

Notes:

• We reuse the view directory also as our install directory.
• We add extra CMAKE_INSTALL_* defs to set rpath in the binaries and avoid LD_LIBRARY_PATH.

Automate shell environment with direnv

So far we have not polluted our shell environment. Using direnv is one useful way to manage shell environment tied to a directory. To use this, add the following to your .bashrc or run it directly.

eval $(direnv hook bash)

Copy this into a .envrc file in the directory holding local/.

load_prefix "$PWD/local"

Next time you cd to the dev directory, run direnv allow once.

After this is done, edep-sim is in the path and can run.

edep-sim 

Create development area using a Spack Environment

t.b.d.