Albert Y. C. Lai wrote
On 13-07-25 03:14 PM, harry wrote:
How can I change the location that ghc and ghc-pkg use for the user's
package
directory? I'm running GHC in a very restricted environment where I don't
have access to $HOME, but I can use specific subdirectories.
Cannot. But you
harry wrote
$ ghc-pkg check --package-db=~/cabal
ghc-pkg: ~/cabal: openFile: does not exist (No such file or directory)
$ ls ~/cabal
package.cache
Ah, the ~ seems to have been tripping it up. Thank you.
--
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The documentation for throwTo says:
throwTo does not return until the exception has been raised in the
target thread. The calling thread can thus be certain that the target
thread has received the exception. This is a useful property to know
when dealing with race conditions: eg. if there
On Sun, Jul 28, 2013 at 5:35 AM, harry volderm...@hotmail.com wrote:
$ ghc-pkg check --package-db=~/cabal
ghc-pkg: ~/cabal: openFile: does not exist (No such file or directory)
$ ls ~/cabal
package.cache
Yet another reason to avoid ~... it's (a) only expanded by the shell, and
(b) not
Roman Cheplyaka wrote:
The documentation for throwTo says:
throwTo does not return until the exception has been raised in the
target thread. The calling thread can thus be certain that the target
thread has received the exception. This is a useful property to know
when dealing with
Giving good type error messages is tricky!
You get different behaviour for literals because 0 has type (forall a. Num a =
a), whereas you declared x1 to have type Int. GHC could have additionally said
Can't find an instance for Num Bool, but it suppresses such errors if there
are more serious
* Bertram Felgenhauer bertram.felgenha...@googlemail.com [2013-07-28
17:57:04+0200]
Roman Cheplyaka wrote:
The documentation for throwTo says:
throwTo does not return until the exception has been raised in the
target thread. The calling thread can thus be certain that the target
Simon Peyton-Jones simonpj at microsoft.com writes:
I've realised that GHC's -XIncoherentInstances flag is,
I think, over-conservative.
Hi Simon, by coincidence I've just come across a very similar issue with
overlapping instances and FunDeps (following-up some discussion with Oleg,
