message: guard environment variable use and mark axom edit that was not before
diff: @@ -425,11 +425,13 @@ class Mfem(Package):
  'HYPRE_OPT=-I%s' % hypre.prefix.include,
  'HYPRE_LIB=%s' % ld_flags_from_library_list(all_hypre_libs)]
  + #AXOM EDIT START
  # Fix for working around missing dynamic libraries for TOSS4 MPI.
  # Use cxx instead of mpicxx for compilation and linking of
  # get_hypre_version executable check during configure step.
  - if 'toss_4' in os.environ["SYS_TYPE"]:
  + if "SYS_TYPE" in env and 'toss_4' in env["SYS_TYPE"]:
  options += ['GHV_CXX=%s' % self.compiler.cxx]
  + #AXOM EDIT END
  if '+metis' in spec:
  options += [
  