hugs-options aren't passed to ffihugs

[guest]

Options in hugs-options aren't passed through to ffihugs, most importantly -98 and +o are the ones we'd like to pass. For enabling the +o flag Hugs-Sept06 does not honor:

• pragma {-# LANGUAGE OverlappingInstances #-}
• pragma {-# OPTIONS_HUGS +o #-}
• cabal extensions: OverlappingInstances

And the -98 flag has similar issues. Therefore this is a real problem.

Immediate solution: The options set in hugs-options should be passed to ffihugs as well. As of Cabal 1.6 they are not passed (verified by Duncan Coutts). The two programs accept all the same options, so this is valid.

Ideal solution: Based on the extensions field, Cabal should automatically determine whether -98 and +o need to be enabled (for both hugs and ffihugs).

A simple example demonstrating this bug can be found in Darcs repo  http://community.haskell.org/~wren/cabal-ffihugstest

[elga]

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