You most likely updated GHC or something and so you have to reinstall all the packages you get errors for first:

cabal install QuckCheck -reinstall --force-reinstalls

Am 15.05.2015 um 09:10 schrieb Roelof Wobben:

Another problem.

I now see this output :

Preprocessing library digits-0.2...                                                                                      

[1 of 1] Compiling Data.Digits      ( src/Data/Digits.hs, dist/build/Data/Digits.o )                                     

/usr/bin/ld: cannot find -lHSQuickCheck-2.8.1-ghc7.8.3                                                                   

/usr/bin/ld: cannot find -lHStf-random-0.5-ghc7.8.3                                                                      

/usr/bin/ld: cannot find -lHSprimitive-0.6-ghc7.8.3                                                                      

/usr/bin/ld: cannot find -lHStransformers-0.4.3.0-ghc7.8.3                                                               

/usr/bin/ld: cannot find -lHSrandom-1.1-ghc7.8.3                                                                         

collect2: error: ld returned 1 exit status                                                                               

Failed to install digits-0.2                                                                                             

cabal: Error: some packages failed to install:                                                                           

digits-0.2 failed during the building phase. The exception was:                                                          

ExitFailure 1                                                                                                            

codio@switch-grille:~/workspace$ ghc                                                                                     

ghc: no input files                                                                                                      

Usage: For basic information, try the `--help' option.                                                                   

codio@switch-grille:~/workspace$ ghc --version                                                                           

The Glorious Glasgow Haskell Compilation System, version 7.8.3  

Roelof

Roelof Wobben schreef op 15-5-2015 om 9:08:

Thanks,

And if I want to import it into my project , do I then do import Data.Digits ?

Roelof


Alex Hammel schreef op 14-5-2015 om 23:25:

`Data.Digits` is the name of the module. The name of the package is `digits`. Therefore: $(cabal install digits)

`cabal` installs packages, which may contain many modules

On Thu, 14 May 2015 at 14:14 Roelof Wobben <r.wobben@home.nl> wrote:

Hello,,

I want to use the module Digits which according to Hoogle is in Data.Digits

But when I do cabal install Data.Digits I see this error message :

cabal install Data.Digits
cabal: The file does not exist 'Data.Digits'

What do I do wrong ?

Roelof


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