[Haskell-beginners] cannot install system.filesystem

[galeonet at tiscali.it]

Hello,
what's wrong (see below)????
Thank you in
advance,
Maurizio

C:Documents and Settingsxxx1>cabal install
FileSystem
Resolving dependencies...
cabal: Could not resolve
dependencies:
trying: FileSystem-1.0.0 (user goal)
next goal: bytestring
(dependency of FileSystem-1.0.0)
rejecting:
bytestring-0.10.6.0/installed-3a6..., 0.10.6.0, 0.10.4.1,
0.10.4.0,
0.10.2.0, 0.10.0.2, 0.10.0.1, 0.10.0.0 (conflict: FileSystem
=>
bytestring==0.9.*)
trying: bytestring-0.9.2.1
trying:
directory-1.2.2.0/installed-678... (dependency of FileSystem-1.0.0)
next
goal: Win32 (dependency of
directory-1.2.2.0/installed-678...)
rejecting:
Win32-2.3.1.0/installed-071... (conflict: bytestring==0.9.2.1,
Win32 =>
bytestring==0.10.6.0/installed-3a6...)
rejecting: Win32-2.3.1.0,
2.3.0.2, 2.3.0.1, 2.3.0.0, 2.2.2.0, 2.2.1.0,
2.2.0.2, 2.2.0.1, 2.2.0.0,
2.1.0.0, 2.1 (conflict: directory
=>
Win32==2.3.1.0/installed-071...)
Dependency tree exhaustively
searched.

C:Documents and Settingsxxx1>cabal install FileSystem
--allow-newer
Resolving dependencies...
Downloading
FileSystem-1.0.0...
Configuring FileSystem-1.0.0...
Building
FileSystem-1.0.0...
Preprocessing library FileSystem-1.0.0...
[1 of 9]
Compiling System.FileSystem.Utils ( SystemFileSystemUtils.hs,
distbu
ildSystemFileSystemUtils.o )
[2 of 9] Compiling
System.FileSystem.Types ( SystemFileSystemTypes.hs,
distbu
ildSystemFileSystemTypes.o )

SystemFileSystemTypes.hs:123:82:

No instance for (Applicative (FST m))
 arising from the 'deriving'
clause of a data type declaration
 Possible fix:
 use a standalone
'deriving instance' declaration,
 so you can specify the instance
context yourself
 When deriving the instance for (Monad (FST
m))

SystemFileSystemTypes.hs:123:89:
 No instance for (Applicative (FST
m))
 arising from the 'deriving' clause of a data type declaration

Possible fix:
 use a standalone 'deriving instance' declaration,
 so you
can specify the instance context yourself
 When deriving the instance
for (MonadIO (FST m))
Failed to install FileSystem-1.0.0
cabal: Error:
some packages failed to install:
FileSystem-1.0.0 failed during the
building phase. The exception was:
ExitFailure 1

 



Connetti gratis il mondo con la nuova indoona:  hai la chat, le chiamate, le video chiamate e persino le chiamate di gruppo.
E chiami gratis anche i numeri fissi e mobili nel mondo!
Scarica subito l’app Vai su https://www.indoona.com/

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.haskell.org/pipermail/beginners/attachments/20151203/fcf62652/attachment-0001.html>