Re: [Haskell-cafe] ANN: HDBC v2.0 now available

Thanks, Krzysztof - it worked for me. Something is definitely wrong with cabal dependencies: even when HDBC-2.0.0 was installed, it tried to install it again (and failed) when I tried to install HDBC-postgresql and HDBC-sqlite3. Manual installation (./Setup configure; ./Setup build; ./Setup install) worked. Thank you for your help, -- Valentyn. On Jan 30, 2009, at 3:52 PM, Krzysztof Skrzętnicki wrote:

On Sat, Jan 31, 2009 at 00:45, Krzysztof Skrzętnicki wrote: On Sat, Jan 31, 2009 at 00:07, Valentyn Kamyshenko wrote: Hello John,

I'm trying to install the new version of HDBC on my Mac (ghc version is 6.10.1), and get the following error:

# cabal upgrade --global Resolving dependencies... 'HDBC-2.0.0' is cached. Configuring HDBC-2.0.0... Preprocessing library HDBC-2.0.0... Preprocessing executables for HDBC-2.0.0... Building HDBC-2.0.0... [1 of 7] Compiling Database.HDBC.SqlValue ( Database/HDBC/ SqlValue.hs, dist/build/Database/HDBC/SqlValue.o ) [2 of 7] Compiling Database.HDBC.ColTypes ( Database/HDBC/ ColTypes.hs, dist/build/Database/HDBC/ColTypes.o ) [3 of 7] Compiling Database.HDBC.Statement ( Database/HDBC/ Statement.hs, dist/build/Database/HDBC/Statement.o )

Database/HDBC/Statement.hs:113:9: Type constructor `Exception' used as a class In the instance declaration for `Exception SqlError' cabal: Error: some packages failed to install: HDBC-2.0.0 failed during the building phase. The exception was: exit: ExitFailure 1

I got the same error: Windows XP, GHC 6.10.1. For some reason imported Control.Exception module appears to be 6.8.* version.

I found a (temporary) fix: change dependancy in .cabal file to state "base >= 4". Otherwise cabal-install selects base-3 which is the cause of the problems.

All best

Christopher Skrzętnicki