[Yhc] broken build

[Kartik Vaddadi]

Hello,
I was trying to add a primitive function for which I modified
Prelude.hs, Prelude.c and Primitive.hs. I rebuilt the prelude using 'yhc
-c - redefine -prelude' and then did an scons, but I got the following
error:

> scons: Reading SConscript files ...
> Building version 0.7.0-20070215041026-custom.
> Checking for architecture... x86
> Checking for operating system... linux2
> Adding '-g3' to CCFLAGS.
> Checking for Subversion binary... "svn"
> Checking for Subversion version... Found version 1.4.0.
> Checking for GHC binary... "ghc"
> Checking for GHC version 6.4.1 or later... Found version 6.6.
> Checking for C header file gmp.h... yes
> Checking for mpz_t integ; mpz_init (integ) in C library gmp... yes
> Checking for libgmp version... 4.2.1
> Bootstrapping...
> Done.
> scons: done reading SConscript files.
> scons: Building targets ...
> YHC_build(["src/packages/yhc-base-1.0/Foreign/Word.hbc"], ["src/packages/yhc-base-1.0/Foreign/Word.hs"])
> inst/bin/yhc -core -cpp -c src/packages/yhc-base-1.0/Foreign/Word.hs
> Compiling Foreign.Word     ( src/packages/yhc-base-1.0/Foreign/Word.hs )
> ***instanceI(2) InfoUsed (Id 154) [(Type class,Integral,"oitaR.ataD",1041:16-1041:23)]
> 
> yhc: The class Integral has no instance for the type Prelude.Integer.
> Possible sources for the problem are: 102:713
> When type checking declarations at: 102:686-102:715
> 
> scons: *** [src/packages/yhc-base-1.0/Foreign/Word.hbc] Error 1
> scons: building terminated because of errors.
> kart at enlightenment:~/yhc>   

I undid all the changes I made, and I still get this error. I did not
change anything related to Integral or Integer AFAIK and I didn't even
open the Word.hs file, and the Prelude still has the instance
declaration (instance Integral Integer where...).

How do I resolve this error? I don't want to do an scons fullclean
because I'm working on a modified version of yhc. I haven't come across
this error before that I remember, and I was able to build and pass the
unit tests with no problem till this happened. Thanks for your help.

-- 
Blogs: http://kartik-log.blogspot.com, http://randomkart.blogspot.com
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