ghci-5.00: the `impossible' happened

[Julian Seward (Intl Vendor)]

| > Compiling Main             ( Main.hs, interpreted )
| > ghc-5.00: panic! (the `impossible' happened, GHC version 5.00):
| > 	  bytecode generator can't handle unboxed tuples
| 
| The interpreter does not support foreign declarations yet.
| You can only use them with the batch compiler.

True.

Note that you can still have an interactive session with sources
containing f-i decls.  First compile them to object code with the
batch compiler.  The object code should then automatically be
loaded and used in subsequent interactive sessions, so the bytecode
generator never has to handle the f-i decls.

J