[Haskell-cafe] GHC 7, Platform 2011.2 vs OS X 10.5, Ubuntu 11.04

[Jacek Generowicz]

On 2011 May 23, at 15:22, Daniel Fischer wrote:

> On Monday 23 May 2011 15:08:41, Jacek Generowicz wrote:

>> Cabal-1.8.0.2 will be downloaded and installed.
>
> That's a bad sign.
> Have you downoaded the bundle from the cabal-install page?

Ermmm, yeeees [sudden pangs of guilt] was that not the right thing to  
do?

> That's not the right thing to do

Darn!

> (yeah, somebody should tell unsuspecting travellers).

We would kinda appreciate it :-)

> With ghc-7, you should use cabal-install-0.10.*, download cabal-
> install-0.10.2 from hackage
> http://hackage.haskell.org/package/cabal-install
>
>>

Done ...

>> base >=4 && <3 && >=1 && <5, filepath >=1 && <1.2
>
> You see that that constraint is impossible, don't you?

Yes, but I suspected my inability to read the constraint properly.

>
> Okay,
>
> $ghc-pkg unregister parsec-2.1.0.1 (unless you want to keep it)
>
> Try it with cabal-install-0.10.2,

Bingo!

> sorry for the inconvenience.

<Marvin> I think ... I feel good about it. </Marvin>

Many, many thanks for your help.

(GHC 7.03 is compiling away on OS X, BTW, no glitches so far).