petsc: reorder build options and external dependency

  replaceVars,

  python3,

  python3Packages,

  withPetsc4py ? false,

  blas,

  lapack,

  mpiSupport ? true,

  zlib, # propagated by p4est but required by petsc

  mpi, # generic mpi dependency

  mpiCheckPhaseHook,

  withP4est ? withFullDeps,

  # Build options

  petsc-optimized ? false,

  petsc-scalar-type ? "real",

  petsc-precision ? "double",

  mpiSupport ? true,

  withPetsc4py ? false, # petsc python binding

  withFullDeps ? false, # full External libraries support

  # External libraries options

  withHdf5 ? withFullDeps,

  withMetis ? withFullDeps,

  withParmetis ? false, # parmetis is unfree and should be enabled manualy

  withPtscotch ? withFullDeps,

  withScalapack ? withFullDeps,

  withMumps ? withFullDeps,

  withP4est ? withFullDeps,

  # External libraries

  hdf5,

  metis,

  withMetis ? withFullDeps,

  parmetis,

  withParmetis ? false, # parmetis is unfree and should be enabled manualy

  scotch,

  withPtscotch ? withFullDeps,

  scalapack,

  withScalapack ? withFullDeps,

  mumps_par,

  withMumps ? withFullDeps,

  pkg-config,

  p4est,

  zlib, # propagated by p4est but required by petsc

  petsc-optimized ? false,

  petsc-scalar-type ? "real",

  petsc-precision ? "double",

  withFullDeps ? false

}:

# This version of PETSc does not support a non-MPI p4est build