R help - Jul 2008 - .Last() and namespace

Dear R-help list,

 for a package that uses Rmpi calls and a namespace,
 I need to define a .Last()  function to call mpi.finalize() - directly
before R quits.

 The hooks like on .onUnload  are not useful in this case, because they
are not executed when the R session is finished.
 
 The defined .Last() must be in the base namespace to be executed, is
there a better way  to do this  than this hack :

  eval(expr=".Last" <- function() mpi.finalize(), envir
.BaseNamespaceEnv)   ?


Thanks!

Ralf.