Malcolm Wallace wrote:
I think Simon was suggesting the pragma {-# LANGUAGE ... #-} for a compiler-independent specification of the specific language extensions required by a module - this could indeed be in a format derived from Cabal.
Very good.
I don't see how the use of pragmas will directly reduce the need for conditional imports. Eventually, the libraries shipped with compilers will converge sufficiently to reduce differences in imports, but that is a separate issue.
I simply meant that it would be unfortunate if one had to resort to CPP just because of some incompatibility between the command-line syntax of the various compilers. E.g., I'd rather not write things like #ifdef __GHC__ {-# OPTIONS ... #-} #endif #ifdef __NHC__ {-# OPTIONS ... #-} #endif /Henrik -- Henrik Nilsson School of Computer Science and Information Technology The University of Nottingham nhn@cs.nott.ac.uk This message has been scanned but we cannot guarantee that it and any attachments are free from viruses or other damaging content: you are advised to perform your own checks. Email communications with the University of Nottingham may be monitored as permitted by UK legislation.