cabal install xmonad-extras
Resolving dependencies...
Configuring xmonad-extras-0.9...
Preprocessing library xmonad-extras-0.9...
Building xmonad-extras-0.9...
[1 of 4] Compiling XMonad.Prompt.MPD ( XMonad/Prompt/MPD.hs, dist/build/XMonad/Prompt/MPD.o )
XMonad/Prompt/MPD.hs:76:41: Not in scope: `findArtist'
XMonad/Prompt/MPD.hs:76:56: Not in scope: `listArtists'
XMonad/Prompt/MPD.hs:82:25:
Not in scope: type constructor or class `PLIndex'
XMonad/Prompt/MPD.hs:85:23: Not in scope: data constructor `Pos'
XMonad/Prompt/MPD.hs:86:15: Not in scope: data constructor `ID'
XMonad/Prompt/MPD.hs:89:60:
Not in scope: type constructor or class `PLIndex'
cabal: Error: some packages failed to install:
xmonad-extras-0.9 failed during the building phase. The exception was:
ExitFailure 1
flengyel@netbook:~$