RE: Distribution.PreProcess

On 07 December 2004 17:56, Isaac Jones wrote:

Ross Paterson writes:

...

It might be preferable not to unlit .lhs files, as all implementations can handle them, and the originals are better for human readers (such as Hugs users curious about their libraries). There's no real need to unlit .ly files either, though some other preprocessors will need it. (And should unlit be treated as just another preprocessor?)

Yeah... should we get rid of the unlit preprocessor?

...

As I understand it, preprocessing with cpp is only needed for Hugs, as the compilers have -cpp flags, and will do it properly themselves. For Hugs, cpp will need a -D__HUGS__ option, plus extra options that are often system-dependent (and will also be needed by the compilers). This harks back to the need to separate system-dependent build parameters from the package description, and provide hooks to generate and use them.

I'll try to think more about this.

Another thing to bear in mind: at some point we want to provide './setup haddock' (or maybe './setup haddock-html', './setup haddock-docbook', ...) and unlit/CPP will be required for that. Cheers, Simon