Tests and test setup

[mfherbst]

@Technici4n Now you do the juliasetup in the tests from the setup config file. I wonder if this is a good idea. Are the side effects under control ? Is it perhaps better to do this in the .github/workflows/ci.yml ?

[Technici4n]

I did it in this way to make sure that running pytest locally is enough. I didn't consider side effects, should I be worried about them?

[mfherbst]

Well the very least you should be more specific in the AiidaDFTK version. Not every 0.1 will work, only the most recent (so 0.1.9). See https://pkgdocs.julialang.org/v1/compatibility/ for info (a very important website to bookmark ... I always forget the details)

Also I'm a bit surprised about the Pkg.resolve(); Pkg.precompile(). Should a single Pkg.instantiate() not be enough ?