I didn't realize the State monad wasn't part of the base install. Any particular reason for this? -deech
On Tue, Jul 27, 2010 at 10:24 PM, Ivan Miljenovic <ivan.miljeno...@gmail.com > wrote: > On 28 July 2010 13:17, michael rice <nowg...@yahoo.com> wrote: > > > > See below. Lot's of warnings. Is the install OK? If so, can I use the > same *import*? > > Yeah, the install is OK. The meaning of the warnings are: > > * "Warning: -fallow-undecidable-instances is deprecated:" this GHC > option has changed name, but the mtl package still uses the old name. > > * "Warning: Module `Prelude' is deprecated:" mtl doesn't specify any > bounds on the version of the base library to be used (mainly because > of historic reasons when it wasn't changing much and the Haskell > community wasn't stressing versioning as much; note that the last > version of mtl was released almost 2 years ago). Because a lot of > packages broke when GHC-6.10.4 started shipping with base-4 (along > with base-3 for compatability purposes) due to the differences in how > exceptions were handled, if there is no upper bound on the version of > base to be used then cabal-install plays it safe and uses base-3. > However, the next version of GHC (6.14, which should be coming out > later this year) will not ship with base-3, so GHC-6.12 included that > warning message for people that kept trying to use base-3 that their > code won't work with 6.14. > > So yes, now you can use "import Control.Monad.State". > > > > > Michael > > > > --- On Tue, 7/27/10, Ivan Miljenovic <ivan.miljeno...@gmail.com> wrote: > > > > > > > > If it isn't installed, you can use cabal-install to install it: > > > > > > cabal install mtl > > > > > > -- > > > Ivan Lazar Miljenovic > > > ivan.miljeno...@gmail.com > > > IvanMiljenovic.wordpress.com > > > > > > > > > [mich...@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... > > [mich...@localhost ~]$ > > > > > > > > -- > Ivan Lazar Miljenovic > ivan.miljeno...@gmail.com > IvanMiljenovic.wordpress.com > _______________________________________________ > Haskell-Cafe mailing list > Haskell-Cafe@haskell.org > http://www.haskell.org/mailman/listinfo/haskell-cafe >
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