using R as SHELL in gnu make

[Cook, Malcolm]

I am intrigued by the possibility of using R as the SHELL in a (Gnu) makefile 
(instead of /bin/sh).  (c.f. 
http://www.gnu.org/software/make/manual/make.html#Choosing-the-Shell)

Well, rather, I would like the makefile's SHELL to be a command which 
communicated with an R process.

The makefile targets/prerequistes would, as always, be OS files, which would be 
written/read using standard R file IO.

The makefile's "recipe"s would be written in R (instead of the usual shell).

The R process would be able to be initiated by `load`ing one or more R 
datasets, libraries or entire images.

The R process would be able to accumulate state as the makefile progressed.  
The recipe's would be able to refer to that state, allowing conditional 
execution.

The R process would optionally be saved as an image of on job 
termination/completion.

The R process might be managed using the RServe package, and would need to be 
initiated once only, when the makefile was first invoked.

I would appreciate learning if anyone had any success, informative failures, or 
other lore that may help in (or dissuade me from) embarking on attempt this.

Thanks,

Malcolm Cook
Stowers Institute for Medical Research