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I'm a newbie to Haskell, and wanted to try the acid-state library, but I get the following output when trying to install it:

>cabal install acid-state
Resolving dependencies...
Configuring acid-state-0.7.5...
Building acid-state-0.7.5...
Preprocessing library acid-state-0.7.5...
[ 1 of 15] Compiling Data.Acid.CRC    ( src\Data\Acid\CRC.hs, dist\build\Data\Ac
id\CRC.o )
[ 2 of 15] Compiling Paths_acid_state ( dist\build\autogen\Paths_acid_state.hs,
dist\build\Paths_acid_state.o )
[ 3 of 15] Compiling Data.Acid.Archive ( src\Data\Acid\Archive.hs, dist\build\Da
ta\Acid\Archive.o )
[ 4 of 15] Compiling FileIO           ( src-win32\FileIO.hs, dist\build\FileIO.o
 )

src-win32\FileIO.hs:43:5:
    Not in scope: `catchIO'
    Perhaps you meant `catch' (imported from Prelude)

src-win32\FileIO.hs:55:6:
    Not in scope: `tryE'
    Perhaps you meant `try' (imported from Control.Exception.Extensible)

src-win32\FileIO.hs:56:6:
    Not in scope: `tryE'
    Perhaps you meant `try' (imported from Control.Exception.Extensible)
cabal: Error: some packages failed to install:
acid-state-0.7.5 failed during the building phase. The exception was:
ExitFailure 1

Thanks!

Diego Saa
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    Bug in the library. Looks like they forgot an import, but I can't figure out where they intended to get `catchIO` and `tryE` from. – Daniel Fischer Sep 14 '12 at 00:52

1 Answers1

5

I just ran into the same problem. Temporary workaround: install an older version of acid-state

cabal install acid-state-0.7.0
shang
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