You make a good point about people who use overlapping instances deserving
whatever they get (I'd personally love to see that whole mess removed and
replaced with something less intrusive). The bit that most severely breaks
my intuition here is that under normal, well-behaved circumstances, every
i
Very helpful thanks. TcCoercibleFail is known to time out (for decent reasons)
with –DDEBUG (see comments in the dsource file)
I’l look into the PatSyn thing
Simon
From: Thomas Miedema [mailto:thomasmied...@gmail.com]
Sent: 18 February 2016 18:41
To: Simon Peyton Jones ; ghc-devs@haskell.org
S
Simon,
the commits you pushed today don't validate with -DDEBUG.
Unexpected failures:
patsyn/should_compile MoreEx [exit code non-0] (normal)
patsyn/should_compile T11224b [exit code non-0] (normal)
polykinds MonoidsTF [exit code non-0] (normal)
polykinds
Well, I see your point; but you also can't define a
On Thu, Feb 18, 2016 at 12:00 PM, David Feuer wrote:
> It seems to be that a missing associated type definition should be an
> error, by default, rather than a warning. The current behavior under those
> circumstances strikes me as very strange
It seems to be that a missing associated type definition should be an
error, by default, rather than a warning. The current behavior under those
circumstances strikes me as very strange, particularly for data families
and particularly in the presence of overlapping.
{-# LANGUAGE TypeFamilies #-}
c
Thomas Tuegel writes:
> I think what Andrey meant was, the first time we run the pre-processors,
> cache the locations of all the files that need to be pre-processed. On
> subsequent runs, we only need to check pre-processors the files in the cache.
Yes, something along the lines. Although I don
On Thu, Feb 18, 2016 at 6:43 AM, Herbert Valerio Riedel
wrote:
> On 2016-02-18 at 13:32:59 +0100, Andrey Mokhov wrote:
>> Interesting! In the new Shake-based build system we also need to
>> automagically generate .hs files using Alex et al. My first
>> implementation was slow but then I realised t
Hi,
I know the issue of beginner's Prelude.
But how about "profile"? (like H264/MPEG4-AVC profile [1])
* Beginner Profile : beginner's Prelude or ghci beginner's
representation mode
* Main Profile : Haskell 2010 standard
* Leading edge Profile : set of GHC extensions
If be
Hi Manuel,
> I do worry about the same thing. The Haskell ecosystem is very much
geared towards experts and tinkerers (with laudable exceptions, such as,
for example, the great work done by Chris Allen). Being an expert and
tinkerer that didn’t worry me too much, but lately I am trying to make
fun
On 2016-02-18 at 13:32:59 +0100, Andrey Mokhov wrote:
[...]
> Interesting! In the new Shake-based build system we also need to
> automagically generate .hs files using Alex et al. My first
> implementation was slow but then I realised that it is possible to
> scan the source tree only once and re
Thomas Tuegel writes:
> > What exactly does the pre-process phase do, anyways?
> It runs the appropriate pre-processor (Alex, Happy, c2hs, etc.) for modules
> that require it. It's slow because of the way the process is carried out: For
> each module in the package description, Cabal tries to fi
Johan
Consider this with -XStrict
f y = let Just x = blah[y] in body[y,x]
Suppose that in a call to f,
· blah returns Nothing
· but body does not use x
Should f succeed? For sure, blah will be evaluated to HNF before body is
started, but is the match against Just done strictly
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