ia: > I'm looking for a way of specifying language extensions in a way which will > work in all versions of GHC from 6.4 onwards. > > GHC 6.4 does not support the LANGUAGE pragma. Specifying language options in > the OPTIONS_GHC pragma starts to produce deprecation warnings in 6.10, and > will > presumably eventually fail altogether. > > Any sort of preprocessing at the beginning of a file appears to insert enough > noise to inhibit recognition of file-header pragmas. (Cpphs doesn't appear to > help here.) Attempting preprocessing inside a leading OPTIONS_GHC pragma > fails > because it apparently attempts to interpret the pragma *before* invoking the > preprocessor. > > The only remaining option I can see is to have a completely separate version > of > the file for GHC 6.4. Have I missed anything?
Could you talk a bit about why you need to support 6.4 onwards -- that seems like quite a burden. Is the effort worth it? _______________________________________________ Glasgow-haskell-users mailing list [email protected] http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
