[Yhc] yhc build failure -- possible missing dependency

[Neil Mitchell]

Hi Eric,

> Just pulled the latest YHC this morning and got:
>
> > YHC_build(["src/packages/yhc-base-1.0/Data/Set.hbc"],
> > ["src/packages/yhc-base-1.0/Data/Set.hs"])
> > inst/bin/yhc -cpp -c src/packages/yhc-base-1.0/Data/Set.hs
> > Warning: Can't find file "Typeable.h" in directories
> >         /home/eric/projects/yhc/src/packages/yhc-base-1.0/Data
> >         .
> >   Asked for by: /home/eric/projects/yhc/src/packages/yhc-base-1.0/Data/Set.hs  at line 553 col 1
> > yhc: Error: File not found, Data.List
> > Reason: imported from Data.Set
> > Looked in:
> >   /home/eric/projects/yhc/src/packages/yhc-base-1.0/
> >   .
> >   /home/eric/projects/yhc/inst/lib/yhc/packages/yhc-base/1.0
>
> Building List by hand made it happy, so I'm guessing it's some sort of
> scons-thing.

Thanks for reporting this. Our dependancies in the libraries are
hand-coded, not automatically generated, which means we sometimes get
them wrong. Scons builds things in different orders depending on
filesystem properties, so its hard to spot if you missed something!

We do intend to move to a completely automated dependancy system at
some point, but for the moment I've added this dependancy explicitly.

Thanks for reporting this,

Neil