* ENH: Building OpenFOAM sub-packages (issue #8579)
* Some support for packages building with OpenFOAM
- Adjust the wrappers calling the OpenFOAM Allwmake script. Have them
look for a Allwmake-spack file first, which is assumed to contain
special adjustments for compiling with spack.
This file could be delivered as part of a tarball (which is unlikely)
or generated on the fly by the spack sub-package as part of its
patch or configure stage.
CONFIG: change the default paraview variant for openfoam to be False
- the different combinations of paraview backends, off-screen etc
make it difficult to suggest that building with paraview as
a standard dependency makes much sense.
Additionally, building paraview with qt can become quite an issue.
So it makes much more sense to only enable that upon request.
ENH: add a +vtk variant.
- for VTK with off-screen rendering to be used by the runTimePostProcessing
function object, which is a fairly simple framework for generating images of
some OpenFOAM derived objects (eg, sampling planes).
SPACK spec problem:
- reflect the flex restriction impose by the scotch dependency within
the openfoam spec as well, as partial workaround for buggy or annoying
spec resolution.
OTHER:
- updated the backstop foamEtcFile file to include args handling
as per the OpenFOAM-v1806 updates.
* new version: OpenFOAM-v1806
- https://www.openfoam.com/releases/openfoam-v1806/
a4ca2bb889