{cae}[foss/2023b] fenics-dolfinx v0.9.0

[MdHassanPappu]

Add EasyConfig for fenics-dolfinx v0.9.0

This PR adds a new EasyBuild recipe for DOLFINx, the core C++ component of the FEniCSx Stack.

• Version: 0.9.0

• Toolchain: foss/2023b

• FEniCS dependencies: fenics-basix 0.9.0 fenics-ufcx 0.9.0

It have the Python interfaces provided separately. Dolfinx Python bindings

[tanmoy1989]

I was wondering if it is something similar to this? #22422

[jhale]

@tanmoy1989 In a sense yes, but what is done here is technically superior - the Python bindings are split out from the C++ core libraries. This follows our internal design philosophy, allowing a first class C++ interface with no Python required, and is consistent with our Spack packages, which I wrote with other core developers.

To use an analogy, #22422 is like having a PETSc build with petsc4py included, despite a user not wanting to use Python. It is unfortunate that there was no discussion with the core development team on how this should be done - my strong recommendation would be to remove the old PR and replace with this new set.