See below. Lot's of warnings. Is the install OK? If so, can I use the same *import*?
Michael
--- On Tue, 7/27/10, Ivan Miljenovic
If it isn't installed, you can use cabal-install to install it:
cabal install mtl
-- Ivan Lazar Miljenovic Ivan.Miljenovic@gmail.com IvanMiljenovic.wordpress.com
[michael@localhost ~]$ cabal install mtl Resolving dependencies... Downloading mtl-1.1.0.2... Configuring mtl-1.1.0.2... Preprocessing library mtl-1.1.0.2... Building mtl-1.1.0.2... [ 1 of 21] Compiling Control.Monad.Identity ( Control/Monad/Identity.hs, dist/build/Control/Monad/Identity.o ) Control/Monad/Cont.hs:1:11: Warning: -fallow-undecidable-instances is deprecated: use -XUndecidableInstances or pragma {-# LANGUAGE UndecidableInstances #-} instead Control/Monad/Cont/Class.hs:1:11: Warning: -fallow-undecidable-instances is deprecated: use -XUndecidableInstances or pragma {-# LANGUAGE UndecidableInstances #-} instead Control/Monad/Error.hs:1:11: Warning: -fallow-undecidable-instances is deprecated: use -XUndecidableInstances or pragma {-# LANGUAGE UndecidableInstances #-} instead Control/Monad/Error/Class.hs:1:11: Warning: -fallow-undecidable-instances is deprecated: use -XUndecidableInstances or pragma {-# LANGUAGE UndecidableInstances #-} instead Control/Monad/Identity.hs:1:0: Warning: Module `Prelude' is deprecated: You are using the old package `base' version 3.x. Future GHC versions will not support base version 3.x. You should update your code to use the new base version 4.x. Control/Monad/List.hs:1:11: Warning: -fallow-undecidable-instances is deprecated: use -XUndecidableInstances or pragma {-# LANGUAGE UndecidableInstances #-} instead Control/Monad/RWS/Lazy.hs:1:11: Warning: -fallow-undecidable-instances is deprecated: use -XUndecidableInstances or pragma {-# LANGUAGE UndecidableInstances #-} instead Control/Monad/RWS/Strict.hs:1:11: Warning: -fallow-undecidable-instances is deprecated: use -XUndecidableInstances or pragma {-# LANGUAGE UndecidableInstances #-} instead Control/Monad/Reader.hs:2:11: Warning: -fallow-undecidable-instances is deprecated: use -XUndecidableInstances or pragma {-# LANGUAGE UndecidableInstances #-} instead Control/Monad/Reader/Class.hs:1:11: Warning: -fallow-undecidable-instances is deprecated: use -XUndecidableInstances or pragma {-# LANGUAGE UndecidableInstances #-} instead Control/Monad/State/Lazy.hs:1:11: Warning: -fallow-undecidable-instances is deprecated: use -XUndecidableInstances or pragma {-# LANGUAGE UndecidableInstances #-} instead Control/Monad/State/Strict.hs:1:11: Warning: -fallow-undecidable-instances is deprecated: use -XUndecidableInstances or pragma {-# LANGUAGE UndecidableInstances #-} instead Control/Monad/Writer.hs:1:11: Warning: -fallow-undecidable-instances is deprecated: use -XUndecidableInstances or pragma {-# LANGUAGE UndecidableInstances #-} instead Control/Monad/Writer/Class.hs:1:11: Warning: -fallow-undecidable-instances is deprecated: use -XUndecidableInstances or pragma {-# LANGUAGE UndecidableInstances #-} instead Control/Monad/Writer/Lazy.hs:1:11: Warning: -fallow-undecidable-instances is deprecated: use -XUndecidableInstances or pragma {-# LANGUAGE UndecidableInstances #-} instead Control/Monad/Writer/Strict.hs:1:11: Warning: -fallow-undecidable-instances is deprecated: use -XUndecidableInstances or pragma {-# LANGUAGE UndecidableInstances #-} instead [ 2 of 21] Compiling Control.Monad.Writer.Class ( Control/Monad/Writer/Class.hs, dist/build/Control/Monad/Writer/Class.o ) Control/Monad/Writer/Class.hs:1:0: Warning: Module `Prelude' is deprecated: You are using the old package `base' version 3.x. Future GHC versions will not support base version 3.x. You should update your code to use the new base version 4.x. [ 3 of 21] Compiling Control.Monad.Error.Class ( Control/Monad/Error/Class.hs, dist/build/Control/Monad/Error/Class.o ) Control/Monad/Error/Class.hs:1:0: Warning: Module `Prelude' is deprecated: You are using the old package `base' version 3.x. Future GHC versions will not support base version 3.x. You should update your code to use the new base version 4.x. [ 4 of 21] Compiling Control.Monad.State.Class ( Control/Monad/State/Class.hs, dist/build/Control/Monad/State/Class.o ) Control/Monad/State/Class.hs:1:0: Warning: Module `Prelude' is deprecated: You are using the old package `base' version 3.x. Future GHC versions will not support base version 3.x. You should update your code to use the new base version 4.x. [ 5 of 21] Compiling Control.Monad.Reader.Class ( Control/Monad/Reader/Class.hs, dist/build/Control/Monad/Reader/Class.o ) Control/Monad/Reader/Class.hs:1:0: Warning: Module `Prelude' is deprecated: You are using the old package `base' version 3.x. Future GHC versions will not support base version 3.x. You should update your code to use the new base version 4.x. [ 6 of 21] Compiling Control.Monad.RWS.Class ( Control/Monad/RWS/Class.hs, dist/build/Control/Monad/RWS/Class.o ) Control/Monad/RWS/Class.hs:1:0: Warning: Module `Prelude' is deprecated: You are using the old package `base' version 3.x. Future GHC versions will not support base version 3.x. You should update your code to use the new base version 4.x. [ 7 of 21] Compiling Control.Monad.Trans ( Control/Monad/Trans.hs, dist/build/Control/Monad/Trans.o ) Control/Monad/Trans.hs:1:0: Warning: Module `Prelude' is deprecated: You are using the old package `base' version 3.x. Future GHC versions will not support base version 3.x. You should update your code to use the new base version 4.x. Control/Monad/Trans.hs:26:0: Warning: The import of `System.IO' is redundant except perhaps to import instances from `System.IO' To import instances alone, use: import System.IO() [ 8 of 21] Compiling Control.Monad.Cont.Class ( Control/Monad/Cont/Class.hs, dist/build/Control/Monad/Cont/Class.o ) Control/Monad/Cont/Class.hs:1:0: Warning: Module `Prelude' is deprecated: You are using the old package `base' version 3.x. Future GHC versions will not support base version 3.x. You should update your code to use the new base version 4.x. [ 9 of 21] Compiling Control.Monad.Reader ( Control/Monad/Reader.hs, dist/build/Control/Monad/Reader.o ) Control/Monad/Reader.hs:1:0: Warning: Module `Prelude' is deprecated: You are using the old package `base' version 3.x. Future GHC versions will not support base version 3.x. You should update your code to use the new base version 4.x. [10 of 21] Compiling Control.Monad.Error ( Control/Monad/Error.hs, dist/build/Control/Monad/Error.o ) Control/Monad/Error.hs:1:0: Warning: Module `Prelude' is deprecated: You are using the old package `base' version 3.x. Future GHC versions will not support base version 3.x. You should update your code to use the new base version 4.x. Control/Monad/Error.hs:57:0: Warning: The import of `Control.Monad.Reader.Class' is redundant except perhaps to import instances from `Control.Monad.Reader.Class' To import instances alone, use: import Control.Monad.Reader.Class() Control/Monad/Error.hs:58:0: Warning: The import of `Control.Monad.State.Class' is redundant except perhaps to import instances from `Control.Monad.State.Class' To import instances alone, use: import Control.Monad.State.Class() Control/Monad/Error.hs:60:0: Warning: The import of `Control.Monad.Writer.Class' is redundant except perhaps to import instances from `Control.Monad.Writer.Class' To import instances alone, use: import Control.Monad.Writer.Class() Control/Monad/Error.hs:63:0: Warning: The import of `System.IO' is redundant except perhaps to import instances from `System.IO' To import instances alone, use: import System.IO() [11 of 21] Compiling Control.Monad.List ( Control/Monad/List.hs, dist/build/Control/Monad/List.o ) Control/Monad/List.hs:1:0: Warning: Module `Prelude' is deprecated: You are using the old package `base' version 3.x. Future GHC versions will not support base version 3.x. You should update your code to use the new base version 4.x. [12 of 21] Compiling Control.Monad.RWS.Lazy ( Control/Monad/RWS/Lazy.hs, dist/build/Control/Monad/RWS/Lazy.o ) Control/Monad/RWS/Lazy.hs:1:0: Warning: Module `Prelude' is deprecated: You are using the old package `base' version 3.x. Future GHC versions will not support base version 3.x. You should update your code to use the new base version 4.x. Control/Monad/RWS/Lazy.hs:45:0: Warning: The import of `Control.Monad.Reader.Class' is redundant except perhaps to import instances from `Control.Monad.Reader.Class' To import instances alone, use: import Control.Monad.Reader.Class() Control/Monad/RWS/Lazy.hs:46:0: Warning: The import of `Control.Monad.State.Class' is redundant except perhaps to import instances from `Control.Monad.State.Class' To import instances alone, use: import Control.Monad.State.Class() Control/Monad/RWS/Lazy.hs:48:0: Warning: The import of `Control.Monad.Writer.Class' is redundant except perhaps to import instances from `Control.Monad.Writer.Class' To import instances alone, use: import Control.Monad.Writer.Class() [13 of 21] Compiling Control.Monad.RWS ( Control/Monad/RWS.hs, dist/build/Control/Monad/RWS.o ) Control/Monad/RWS.hs:1:0: Warning: Module `Prelude' is deprecated: You are using the old package `base' version 3.x. Future GHC versions will not support base version 3.x. You should update your code to use the new base version 4.x. [14 of 21] Compiling Control.Monad.RWS.Strict ( Control/Monad/RWS/Strict.hs, dist/build/Control/Monad/RWS/Strict.o ) Control/Monad/RWS/Strict.hs:1:0: Warning: Module `Prelude' is deprecated: You are using the old package `base' version 3.x. Future GHC versions will not support base version 3.x. You should update your code to use the new base version 4.x. Control/Monad/RWS/Strict.hs:45:0: Warning: The import of `Control.Monad.Reader.Class' is redundant except perhaps to import instances from `Control.Monad.Reader.Class' To import instances alone, use: import Control.Monad.Reader.Class() Control/Monad/RWS/Strict.hs:46:0: Warning: The import of `Control.Monad.State.Class' is redundant except perhaps to import instances from `Control.Monad.State.Class' To import instances alone, use: import Control.Monad.State.Class() Control/Monad/RWS/Strict.hs:48:0: Warning: The import of `Control.Monad.Writer.Class' is redundant except perhaps to import instances from `Control.Monad.Writer.Class' To import instances alone, use: import Control.Monad.Writer.Class() [15 of 21] Compiling Control.Monad.State.Lazy ( Control/Monad/State/Lazy.hs, dist/build/Control/Monad/State/Lazy.o ) Control/Monad/State/Lazy.hs:1:0: Warning: Module `Prelude' is deprecated: You are using the old package `base' version 3.x. Future GHC versions will not support base version 3.x. You should update your code to use the new base version 4.x. [16 of 21] Compiling Control.Monad.State ( Control/Monad/State.hs, dist/build/Control/Monad/State.o ) Control/Monad/State.hs:1:0: Warning: Module `Prelude' is deprecated: You are using the old package `base' version 3.x. Future GHC versions will not support base version 3.x. You should update your code to use the new base version 4.x. [17 of 21] Compiling Control.Monad.State.Strict ( Control/Monad/State/Strict.hs, dist/build/Control/Monad/State/Strict.o ) Control/Monad/State/Strict.hs:1:0: Warning: Module `Prelude' is deprecated: You are using the old package `base' version 3.x. Future GHC versions will not support base version 3.x. You should update your code to use the new base version 4.x. [18 of 21] Compiling Control.Monad.Writer.Lazy ( Control/Monad/Writer/Lazy.hs, dist/build/Control/Monad/Writer/Lazy.o ) Control/Monad/Writer/Lazy.hs:1:0: Warning: Module `Prelude' is deprecated: You are using the old package `base' version 3.x. Future GHC versions will not support base version 3.x. You should update your code to use the new base version 4.x. [19 of 21] Compiling Control.Monad.Writer ( Control/Monad/Writer.hs, dist/build/Control/Monad/Writer.o ) Control/Monad/Writer.hs:1:0: Warning: Module `Prelude' is deprecated: You are using the old package `base' version 3.x. Future GHC versions will not support base version 3.x. You should update your code to use the new base version 4.x. [20 of 21] Compiling Control.Monad.Writer.Strict ( Control/Monad/Writer/Strict.hs, dist/build/Control/Monad/Writer/Strict.o ) Control/Monad/Writer/Strict.hs:1:0: Warning: Module `Prelude' is deprecated: You are using the old package `base' version 3.x. Future GHC versions will not support base version 3.x. You should update your code to use the new base version 4.x. [21 of 21] Compiling Control.Monad.Cont ( Control/Monad/Cont.hs, dist/build/Control/Monad/Cont.o ) Control/Monad/Cont.hs:1:0: Warning: Module `Prelude' is deprecated: You are using the old package `base' version 3.x. Future GHC versions will not support base version 3.x. You should update your code to use the new base version 4.x. Registering mtl-1.1.0.2... Installing library in /home/michael/.cabal/lib/mtl-1.1.0.2/ghc-6.12.1 Registering mtl-1.1.0.2... [michael@localhost ~]$