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<br />Hello,<br />what's wrong (see below)????<br />Thank you in advance,<br />Maurizio<br /><br />C:\Documents and Settings\xxx1>cabal install FileSystem<br />Resolving dependencies...<br />cabal: Could not resolve dependencies:<br />trying: FileSystem-1.0.0 (user goal)<br />next goal: bytestring (dependency of FileSystem-1.0.0)<br />rejecting: bytestring-0.10.6.0/installed-3a6..., 0.10.6.0, 0.10.4.1, 0.10.4.0,<br />0.10.2.0, 0.10.0.2, 0.10.0.1, 0.10.0.0 (conflict: FileSystem =><br />bytestring==0.9.*)<br />trying: bytestring-0.9.2.1<br />trying: directory-1.2.2.0/installed-678... (dependency of FileSystem-1.0.0)<br />next goal: Win32 (dependency of directory-1.2.2.0/installed-678...)<br />rejecting: Win32-2.3.1.0/installed-071... (conflict: bytestring==0.9.2.1,<br />Win32 => bytestring==0.10.6.0/installed-3a6...)<br />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,<br />2.2.0.2, 2.2.0.1, 2.2.0.0, 2.1.0.0, 2.1 (conflict: directory =><br />Win32==2.3.1.0/installed-071...)<br />Dependency tree exhaustively searched.<br /><br />C:\Documents and Settings\xxx1>cabal install FileSystem --allow-newer<br />Resolving dependencies...<br />Downloading FileSystem-1.0.0...<br />Configuring FileSystem-1.0.0...<br />Building FileSystem-1.0.0...<br />Preprocessing library FileSystem-1.0.0...<br />[1 of 9] Compiling System.FileSystem.Utils ( System\FileSystem\Utils.hs, dist\bu<br />ild\System\FileSystem\Utils.o )<br />[2 of 9] Compiling System.FileSystem.Types ( System\FileSystem\Types.hs, dist\bu<br />ild\System\FileSystem\Types.o )<br /><br />System\FileSystem\Types.hs:123:82:<br /> No instance for (Applicative (FST m))<br /> arising from the 'deriving' clause of a data type declaration<br /> Possible fix:<br /> use a standalone 'deriving instance' declaration,<br /> so you can specify the instance context yourself<br /> When deriving the instance for (Monad (FST m))<br /><br />System\FileSystem\Types.hs:123:89:<br /> No instance for (Applicative (FST m))<br /> arising from the 'deriving' clause of a data type declaration<br /> Possible fix:<br /> use a standalone 'deriving instance' declaration,<br /> so you can specify the instance context yourself<br /> When deriving the instance for (MonadIO (FST m))<br />Failed to install FileSystem-1.0.0<br />cabal: Error: some packages failed to install:<br />FileSystem-1.0.0 failed during the building phase. The exception was:<br />ExitFailure 1<br /><br />
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