[Haskell-beginners] Failure to install cabal-install.

[Derek Mahar]

On Mon, Feb 24, 2014 at 2:30 PM, Derek Mahar <derek.mahar at gmail.com> wrote:

> On Mon, Feb 24, 2014 at 1:20 PM, Derek Mahar <derek.mahar at gmail.com>wrote:
>
>> [dmahar at dmahar haskell-platform-2013.2.0.0]$ cabal update
>> Downloading the latest package list from hackage.haskell.org
>> Note: there is a new version of cabal-install available.
>> To upgrade, run: cabal install cabal-install
>> [dmahar at dmahar haskell-platform-2013.2.0.0]$ cabal install cabal-install
>> Resolving dependencies...
>> Configuring HTTP-4000.2.11...
>> Building HTTP-4000.2.11...
>> Preprocessing library HTTP-4000.2.11...
>>
>> Network/Stream.hs:35:8:
>>     Could not find module `Control.Monad.Error'
>>     There are files missing in the `mtl-2.1.2' package,
>>     try running 'ghc-pkg check'.
>>     Use -v to see a list of the files searched for.
>> Failed to install HTTP-4000.2.11
>> cabal: Error: some packages failed to install:
>> HTTP-4000.2.11 failed during the building phase. The exception was:
>> ExitFailure 1
>> cabal-install-1.18.0.2 depends on HTTP-4000.2.11 which failed to install.
>>
>
> 'ghc-pkg -v check' reports that my Haskell environment is missing many
> files and that many of its packages are broken.  See the attached output of
> 'ghc-pkg -v check'.
>

I abandoned the idea of fixing the Haskell Platform on my Red Hat
Enterprise Linux 6 workstation and instead installed Ubuntu 13.10 in a
virtual machine in VirtualBox and installed the much more recent Haskell
Platform packages from the Ubuntu repository.

Derek
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