missing mtl (which exists) when installing filemanip package

[Albert Y. C. Lai]

On 13-01-10 10:34 AM, HP Wei wrote:
> Question:
>     why can't $HOME/ghc/lib/mtl-2.0.1.0/
>     be recognized during the above Setup configure ??

You need to see my
http://www.vex.net/~trebla/haskell/sicp.xhtml

Existence of files is insufficient. Metadata trumps data.

But there is one point I don't understand in Brent Yorgey's theory.

Presumably, you are consistent, you also used Setup rather than "cabal 
install" for mtl. Therefore, mtl should also be in global.