Haddock version during build

[Ian Lynagh]

On Tue, Jun 03, 2008 at 03:43:55PM +0200, David Waern wrote:
> 2008/6/3 Duncan Coutts <duncan.coutts at worc.ox.ac.uk>:
> > As I understand it the issues is that since haddock 2.x is using the ghc
> > api and loads .hi files and then the .hi versions need to match up.
> > Perhaps Simon or David can comment in more detail and about how we might
> > relax the restriction.
> 
> The background is that Haddock needs the path to a GHC library
> directory, to be able to initialize the GHC API. The path must belong
> to an installed GHC of the same version that Haddock was built with.
> 
> In Cabal, we get the path from the configured GHC version.

Do you mean that whenever you run haddock you need to tell it which ghc
libdir to use?

Can't haddock instead use the path for the compiler that it was built
with? With my Debian maintainer hat on at least, this is what I'd want.

> I usually install the documentation by first installing GHC without
> docs, then installing Haddock with this GHC version, and then running
> the docs installation.

This is impractical for systems like Debian. If we want to move to
haddock2 then, as things stand, I think we'd need to ship haddock as
part of GHC.


Thanks
Ian