How to make generic DFT input

[samwaseda]

While solving this issue, I realized there's no generic DFT interface. In this particular case, I would like to have the plane wave k points, which in VASP and SPHInX are currently given by:

[int(k) for k in vasp.input.kpoints[3].split()]
# and
spx.input.KpointFolding

Should we create a common interface for DFT parameters, or it's not interesting?

[pmrv]

The Vasp code uses ElectronicStructure for output, is that part of the sphinx also?

[samwaseda]

Here, I'm talking about the input.

[pmrv]

Missed it while scanning, Input is important too.