Resurrecting yarr

[Dominic Steinitz]

This seems to be related to

> https://ghc.haskell.org/trac/ghc/ticket/8425
> https://ghc.haskell.org/trac/ghc/ticket/7737
> https://ghc.haskell.org/trac/ghc/ticket/9128

but these are marked as closed for 7.8.3

Dominic Steinitz
dominic at steinitz.org
http://idontgetoutmuch.wordpress.com

On 27 Dec 2014, at 09:24, Dominic Steinitz <dominic at steinitz.org> wrote:

> I am trying to resurrect the yarr package (https://hackage.haskell.org/package/yarr). Thanks to all the very helpful folk in the Haskell community it now compiles under 7.8.3 and the tests run apart from
> 
>> ~/Dropbox/Private/yarr/tests $ ./canny 1 50 100 tree.png 
>> luminosity        8.41 ms,  5.33 tics per index
>> canny: Oops!  Entered absent arg $dVector1{v a6vi} [lid] Vector{tc rrL}
>>                          (VecList{tc rrR} (S{tc ruZ} Z{tc ruI}))
>>                          (VecList{tc rrR}
>>                             (S{tc ruZ}
>>                                (S{tc ruZ} (S{tc ruZ} (S{tc ruZ} (S{tc ruZ} Z{tc ruI})))))
>>                             (Word{(w) tc 32R}
>>                              -> Word{(w) tc 32R} -> IO{tc 32I} Word{(w) tc 32R}))
>> canny: thread blocked indefinitely in an MVar operation
> 
> Now according to the notes left by the original developer, this used to work under ghc 7.6.1.
> 
> What is this message telling me?
> 
> Let me know if I should provide more information.
> 
> Many thanks
> 
> Dominic Steinitz
> dominic at steinitz.org
> http://idontgetoutmuch.wordpress.com
> 

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