Add Spack environment specification

[stephenswat]

This commit adds a YAML-based Spack environment specification which allows users to more easily install traccc's dependencies.

[krasznaa]

It doesn't hurt, so sure...

[paulgessinger]

Should we add this to the build cache populater as well at some point?

[stephenswat]

Should we add this to the build cache populater as well at some point?

I think that would be a good idea!

[beomki-yeo]

Using -DTRACCC_USE_SYSTEM_LIBS=ON flag is mandatory?

Can we let spack install compilers, CMake, Boost and ROOT and let traccc CMake install other dependencies?

[stephenswat]

Using -DTRACCC_USE_SYSTEM_LIBS=ON flag is mandatory?

Can we let spack install compilers, CMake, Boost and ROOT and let traccc CMake install other dependencies?

It's certainly not mandatory, but I don't see a good reason not to use it. If you have a package manager set up already there is not really any use in having CMake download the dependencies for you, right? 🤔

But yes, it is of course possible to install only the compilers, CMake, Boost, and ROOT with Spack and to use CMake for the rest if you prefer!

[beomki-yeo]

I thought it would be bothersome to keep the versions of all dependencies updated. 🤔
I don't have a strong opinion on this so probably you can go with the setup you prefer.

[stephenswat]

I changed this slightly, taking out the less stable dependencies for now (detray, vecmem, etc.).

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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