[Haskell-beginners] scotty installation error

Ovidiu D ovidiudeac
Tue Oct 1 05:07:03 UTC 2013


The ghc and cabal versions are:
$ ghc --version
The Glorious Glasgow Haskell Compilation System, version 7.4.2
$ cabal --version
cabal-install version 1.18.0.1
using version 1.18.1 of the Cabal library


On Tue, Oct 1, 2013 at 2:32 AM, Ovidiu D <ovidiudeac at gmail.com> wrote:

> I'm trying to write a small web application starting from here:
> http://adit.io/posts/2013-04-15-making-a-website-with-haskell.html
>
> Resolving dependencies...
> Configuring scotty-0.2.0...
> Building scotty-0.2.0...
> Preprocessing library scotty-0.2.0...
>
> Web/Scotty.hs:35:8:
>     Could not find module `Control.Monad.Trans.Resource'
>     It is a member of the hidden package `resourcet-0.4.8'.
>     Perhaps you need to add `resourcet' to the build-depends in your
> .cabal file.
>     Use -v to see a list of the files searched for.
> Failed to install scotty-0.2.0
>
> My build-depends clause is the following:
>
>   build-depends:       base ==4.5.*
>                      , wai ==1.3.*
>                      , warp ==1.3.*
>                      , http-types ==0.7.*
>                      , resourcet
>                      , scotty
>                      , text
>                      , bytestring
>                      , blaze-html
>                      , persistent
>                      , persistent-template
>                      , persistent-sqlite
>                      , persistent-postgresql
>                      , heroku
>                      , transformers ==0.3.0.0
>                      , wai-middleware-static ==0.3.2
>                      , wai-extra
>                      , time
>                      , monad-logger ==0.2.4
>
> Any idea what is wrong with it?
>
> I also tried to use the dependencies list without any versions and I get the same error
>
> Thanks
> ovidiu
>
>
>
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