On Dec 23, 2005, at 11:53, Arjen wrote:
On Fri, 23 Dec 2005, Joel Reymont wrote:
> Folks,
>
> I have been looking at the code for the "Arrows for invertible
> programming" paper (http://www.cs.ru.nl/A.vanWeelden/bi-arrows/) and
> I have a question about syntax. ghci surely does not like it.
>
I've updated the web page to say that is does not work with Hugs, GHCi
or GHC -fgenerics, sorry for the confusion.
It really requires Generic Haskell (GH) 1.42. I never got GH working
with GHC 6.4, so you also really need GHC 6.2.2. I think you can run
the result of the GH preprocessor (using the right command line
options) in GHCi or Hugs, but I'm not sure.
Once you have compiled your GH program (.ghs) into a haskell program
(.hs), you can load it into ghci using the wrapper provided in
build/bin/gh-ghci .
If anyone got GH working with GHC 6.4(+), please tell me how you did
it.
To build GH with the 6.4 series of GHC you need to check out the
sources from the subversion repository:
svn co
https://svn.cs.uu.nl:12443/repos/Generic-Haskell/trunk/Generic-Haskell/
Cheers,
Alexey
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