I'm sorry, the name of the library you are missing is called,
coincidentally, "missingH" so, the command 'cabal install missingh'
*should* solve your problem and allow you to build that package. No,
I have no idea why they called it that. Hmm, looked it up, it is a
big library of functions that the author deemed were missing in
haskell. Anyways, it is used quite a bit.
There may be other libraries you are missing, all of which are up on
hackage, and if you aren't sure where a certain import or function
comes from you can look it up in hayoo and get more information about
it.
On Tue, Oct 18, 2011 at 9:15 PM, CEO'Riley
Hi David,
Thanks for responding. I'm out here at the hackage.haskell.org site and performed the search. I guess my first question here would be "what is missing"? Does this mean something is missing? I see it for a lot of the components (functions) of Data.List.Utils.
Regards, CEO'Riley Charles E. O'Riley Jr.
-----Original Message----- From: David McBride [mailto:toad3k@gmail.com] Sent: Tuesday, October 18, 2011 7:38 PM To: ceoriley@gmail.com Cc: beginners@haskell.org Subject: Re: [Haskell-beginners] Data-List-Utils
Data.List.Utils is part of the missingh library. If your app can't find it, it is probably not installed. cabal install missingh.
To find out where a random import comes from, go to hackage.haskell.org, click on hayoo, and search for "Data.List.Utils".
The ambiguous module name is totally different and doesn't happen very often anymore. Monads-fd used to be an improved version of mtl, and it exported roughly the same interface, but monads-fd is now deprecated and shouldn't be used. Sometimes when you load a file it ends up choosing it anyways, because it has to choose something. You can avoid that by typing ghci -hide-package=monads-fd. Alternatively you can use ghc-pkg hide to hide it permanently, so that nothing tries to use that, that should work.