[plt-dev] hangman teachpack broken

Meaning? I sent this message weeks ago.


On May 21, 2009, at 12:36 PM, Robby Findler wrote:

> I was doing similar things when Matthew sent his message. Guess it
> pays to have written the error messages, eh?  :)
>
> Thanks, Matthew.
>
> Robby
>
> On Thu, May 21, 2009 at 11:35 AM, Matthias Felleisen
> <matthias at ccs.neu.edu> wrote:
>>
>> The following program triggers the error.
>>
>> #lang scheme/load
>>
>> (module draw-sig.ss scheme
>>  (provide draw^)
>>  (define-signature draw^()))
>>
>>
>> (module big-draw.ss scheme
>>
>>  (require lang/posn
>>           mzlib/unit
>>           mred
>>           mred/mred-unit
>>           graphics/graphics-sig
>>           graphics/graphics-posn-less-unit)
>>
>>  (define-values/invoke-unit/infer
>>    (export graphics^)
>>    (link graphics-posn-less@ standard-mred@))
>>
>>  (provide-signature-elements graphics^)
>>  )
>>
>> (module a scheme
>>  (require 'draw-sig.ss 'big-draw.ss mzlib/unit)
>>  (provide-signature-elements draw^))
>>
>> (require 'a)
>>
>>