Hi Haskell-art users,
Thanks in advance.
I am using GHCi (6.12.3) on Windows XP.
May I request you to assist me for the following please.
I am trying to install packages related to Music. What are the packages I can
install and how? Please provide me detailed information (packages,
documentation, literature or tutorial).
I have tried like this:
A. Check for cabal update:
I have tried with at ghc command prompt:
ghc>cabal update -v
But the the message remains the same as before:
Downloading the latest package list from hackage.haskell.org
cabal: failed
I couldn’t figure out the problem here.
B: Tried to install a package (mtl-1.1.1.0 as an example) manually.
1. I have installed ghc in F:\ghc drive.
2. As a trial, I have downloaded the package mtl
from http://hackage.haskell.org/package/mtl-1.1.1.0
3. I have used cygwin to unpack the files.
4. At DOS prompt (F:\Haskell\Literature\Packages\mtl-1.1.1.0\cabal install)
- It looks like installing in C:\Documents and Settings\userID\Application
Data\cabal\mtl-1.1.1.0
At Prelude I have issued a command (Prelude> :show packages), it does not
show the
package mtl. But it shows these packages:
packages currently loaded:
base
ffi-1.0
ghc-prim
integer-gmp
rts
I think the package mtl-1.1.1.0 should be in F:\ghc\lib\mtl-1.1.1.0
After installation of a package, how one can test that using an example.
Once again, thank you very much for the time you have given.
Regards,
Deb
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