[Haskell-cafe] Cabal install pandoc

[Roger Mason]

Hello Albert,

On 04/01/2013 11:41 PM, Albert Y. C. Lai wrote:
> On 13-04-01 06:26 AM, Roger Mason wrote:
>> It turned out that there was a stale version of 'array' lurking in the
>> ghc package db.  In spite of reinstalling ghc it did not go away until I
>> unregistered it.  I think it was persisting because re-installing ghc
>> simply unpacked over the old directory leaving that pre-existing file
>> intact.
>
> See my http://www.vex.net/~trebla/haskell/sicp.xhtml for how does GHC 
> know or not know what libs you have. In particular, it has very little 
> to do with files, and clearing GHC is only half the story.
>
> And how to have the same kind of problems recur in the future.
Thank you.  I have read and filed away the article for future 
reference.  I guess the best (least error prone) method of installing 
ghc and packages is to obtain a binary ghc (outside one's package 
manager), build haskell platform and then maintain ghc and packages 
outside the distro package manager.

Comments welcome.

Roger

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