[Agda] Warning: hashable-1.2.0.x has serious performance bugs
Martin Escardo
m.escardo at cs.bham.ac.uk
Fri Jul 12 20:35:25 CEST 2013
On 12/07/13 19:16, Andreas Abel wrote:
> I think that something like the following should work
Thanks!
I'll save the instructions for the next time I need to install/update Agda.
> On 12.07.2013 19:09, Martin Escardo wrote:
>> This explains a question I asked privately to you before, where I
>> reported that Agda in a high-end desktop made this year ran at the same
>> speed as in a low-end netbook made in 2008.
>
> I just came about the problem yesterday, and it took my whole day to
> find the source of evil and expell it. Sorry for being clueless before,
> I used to trust people to only upload extensively tested libraries onto
> hackage, but now I learned the better.
I was puzzled that a clean install of ubuntu, Haskell, cabal, and Agda
produced such a slow result for me (9 minutes for an Agda file). And it
is a miracle that copying the .cabal tree from the netbook not only
worked, but also reduced the time to 50 seconds.
Thanks again. Now we know what is going on.
Martin
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