IOExts problem

Simon Marlow simonmarhaskell at
Mon Jan 15 09:31:50 EST 2007

jim burton wrote:
> IOExts seems to be unavailable on my system, whereas I'm guessing it should
> be since the file /usr/lib/ghc-6.4.1/hslibs-imports/lang/IOExts.hi
> exists...(wrong guess?) Within ghci I get 
> Prelude> :m IOExts
> Could not find module `IOExts':
>   it is not a module in the current program, or in any known package.
> Prelude>

IOExts is (was) in the 'lang' package, which is hidden by default, so you need 
to say '-package lang' to get it.  Bear in mind that lang has been deprecated 
for a long time, and is gone completely in GHC 6.6, though.


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