#3111: Can't find DPH
-------------------------------+--------------------------------------------
Reporter: colin-adams | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 6.11
Severity: normal | Resolution:
Keywords: | Difficulty: Unknown
Testcase: | Os: Linux
Architecture: x86_64 (amd64) |
-------------------------------+--------------------------------------------
Changes (by simonpj):
* difficulty: => Unknown
Old description:
> I added the following to the top of my module:
>
> {-# LANGUAGE PArr, ParallelListComp #-}
> {-# OPTIONS -fvectorise #-}
>
> But when building I got:
>
> GHC error in desugarer lookup in main:Board:
> Failed to load interface for `Data.Array.Parallel.Lifted.PArray':
> no package matching `dph-par' was found
> ghc: panic! (the 'impossible' happened)
> (GHC version 6.11.20090317 for x86_64-unknown-linux):
> initDs IOEnv failure
>
> Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
>
> I hadn't done anything in particular to try to install DPH, so this is
> probably a user error, but as the panic occurred, i felt duty-bound to
> report the bug as requested.
New description:
I added the following to the top of my module:
{{{
{-# LANGUAGE PArr, ParallelListComp #-}
{-# OPTIONS -fvectorise #-}
}}}
But when building I got:
{{{
GHC error in desugarer lookup in main:Board:
Failed to load interface for `Data.Array.Parallel.Lifted.PArray':
no package matching `dph-par' was found
ghc: panic! (the 'impossible' happened)
(GHC version 6.11.20090317 for x86_64-unknown-linux):
initDs IOEnv failure
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
}}}
I hadn't done anything in particular to try to install DPH, so this is
probably a user error, but as the panic occurred, i felt duty-bound to
report the bug as requested.
Comment:
What's gone wrong is that you need the DPH packages installed, else the
DPH extensions won't work at all:
http://haskell.org/haskellwiki/GHC/Data_Parallel_Haskell.
Right, it's a bug that GHC crashes rather than giving a civilised error
message.
Simon
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3111#comment:1>
GHC <http://www.haskell.org/ghc/>
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