Hi,
I have been struggling to build ghc74 on ARM (ideally with llvm3) on
Fedora 18 (the current development tree).
After applying 4 recent ARM patches from Debian the ghc-7.4.1 build gets to:
:
inplace/bin/ghc-stage1 -H32m -O-package-name base-4.5.0.0
-hide-all-packages -i
Hi Jens,
Am Sonntag, den 22.04.2012, 17:19 +0900 schrieb Jens Petersen:
Anyway thoughts on how to proceed?
the error message looks as if you are actually building on what Debian
calls armhf, with hard floating point support. According to the Debian
changelog:
ghc (7.4.1-2) unstable;
so how can I update the documentation? I asked some of the most
experienced Haskell users at the Hackathon about this, and looked
through any documentation I could find and there was nothing
indicating I could do what you sent in your last message.
On Sun, Apr 22, 2012 at 8:15 AM, Markus Läll
I do not think this is a bug. Since type classes are open, GHC does
not do any reasoning of the form X is the only instance in scope, so
I will pick that one. Other instances could be added at any time
(perhaps in other modules). In this particular instance, GHC has no
reason to choose the Text
On Sun, Apr 22, 2012 at 10:37 AM, Brent Yorgey byor...@seas.upenn.edu wrote:
I do not think this is a bug. Since type classes are open, GHC does
not do any reasoning of the form X is the only instance in scope, so
I will pick that one. Other instances could be added at any time
(perhaps in
| Couldn't we make a special case for IsString, like we do for Num,
| given it's special syntactic association with OverloadedStrings?
Maybe so. It's open to anyone to make a concrete proposal. See
http://hackage.haskell.org/trac/ghc/ticket/6030
which may be the same issue.
Simon
|
I have often wished for something like:
{-# LANGUAGE StringLiteralsAs Text #-}
where all string literals like:
f = foo
would be translated to:
f = (fromString foo :: Text)
I find that OverloadedStrings is too general and causes ambiguous type
errors. Additionally, I seldom find that I have
Sorry, someone responded on haskell-cafe and the message didn't get
sent here. You can default a String. So this compiles just fine:
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE ExtendedDefaultRules #-}
import Data.Text as T
default (T.Text)
classNoDefault a where noDefault :: a -
Matthew Farkas-Dyck strake888 at gmail.com writes:
I made another proposal for records in Haskell, meant to solve just
the namespace problem, and no more.
http://hackage.haskell.org/trac/ghc/wiki/Records/ExplicitClassyRecords
Thanks Matthew, I'm finding your wiki too sketchy to follow.
