trying to get hat-make to swallow my code

[Tom Cooper-2]

Hello,
    I've written a haskell program which is not behaving quite as I'd
expect.  Up till now, I've used Debug.Trace to understand it, but this has
become a major pain, and I was hoping to use hat.

When I run hat-make on the code, I get thousands of warnings followed by
the following errors:

./Hat/EHM2Alt.hs:316:32: Not in scope: `Hat.Ix.grange'

./Hat/EHM2Alt.hs:331:29: Not in scope: `Hat.Ix.gindex'

./Hat/EHM2Alt.hs:342:29: Not in scope: `Hat.Ix.ginRange'

Is this enough of a clue to track down what is happening?  I'm not sure
what other
information would be relevant.  I'm using GHC on Windows.  One of my
modules imports Ix, and several of them import Array.

Any help would be greatly appreciated.  Thanks.

Tom.


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[Tom Cooper-2]

Hi again.
    With some help, I've found a work-around, and made some progress
identifying the problem.  My module EHM2Alt.hs imported Array, which
exports Ix, but does not explicitly import Ix itself.  EHM2Alt uses
functions (like range) from Ix.  The Hat.Array module exports Hat.Ix, but
without an 'as' clause, so the function Hat.Ix.grange is only seen in
Hat.EHM2Alt as Hat.Array.grange, thus the error.  The work-around is for my
module to import Ix directly.  Is this a bug in hat?

Thanks, Tom.

At 22:20 23/10/2006, I wrote:

>Hello,
>    I've written a haskell program which is not behaving quite as I'd
> expect.  Up till now, I've used Debug.Trace to understand it, but this
> has become a major pain, and I was hoping to use hat.
>
>When I run hat-make on the code, I get thousands of warnings followed by
>the following errors:
>
>./Hat/EHM2Alt.hs:316:32: Not in scope: `Hat.Ix.grange'
>
>./Hat/EHM2Alt.hs:331:29: Not in scope: `Hat.Ix.gindex'
>
>./Hat/EHM2Alt.hs:342:29: Not in scope: `Hat.Ix.ginRange'
>
>Is this enough of a clue to track down what is happening?  I'm not sure
>what other
>information would be relevant.  I'm using GHC on Windows.  One of my
>modules imports Ix, and several of them import Array.
>
>Any help would be greatly appreciated.  Thanks.
>
>Tom.
>
>
>_______________________________________________
>Hat mailing list
>Hat@...
>http://www.haskell.org/mailman/listinfo/hat

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[Malcolm.Wallace]

Tom Cooper <t.cooper@...> wrote:

>     With some help, I've found a work-around, and made some progress
> identifying the problem.  My module EHM2Alt.hs imported Array, which
> exports Ix, but does not explicitly import Ix itself.  EHM2Alt uses
> functions (like range) from Ix.  The Hat.Array module exports Hat.Ix,
> but  without an 'as' clause, so the function Hat.Ix.grange is only
> seen in  Hat.EHM2Alt as Hat.Array.grange, thus the error.  The
> work-around is for my  module to import Ix directly.  Is this a bug in
> hat?

Yes, it could well be a bug in Hat.  I will need to study the language
definition carefully to be sure.

Regards,
    Malcolm
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