[Haskell] build an interpreter on top of GHCi?

[WANG Meng]

Hi All,

Does anybody has the experience to built an interpreter on top of GHCi?

What I want is to defined a my own interpreter as a Haskell module and
load it into GHCi. So this new interpreter will be running on top of GHCi
which accepts syntax extension of Haskell. For example:

Prelude> :l myInter
Prelude> myInter> new language source
Prelude> myInter> ...
Prelude> myInter> exit
Prelude>

In another word, I want to have a read-eval-print-loop running on GHCi.
Does anybody know how to do that?

 -W-M-
  @ @
   |
  \_/