On Sun, 2007-11-25 at 18:49 +0100, manu wrote: > Hello, > > I'm trying to do something that should be fairly simple, installing > some DB package so I can use MySQL or SQLite. > > However I've had troubles building HSQL, HaskellDB and Takusen before > giving up (I am using ghc 6.8.1 and Cabal-1.2.2.0). > > ------------------ > > with HSQL : > > Database/HSQL.hsc:66:7: > Could not find module `System.Time': > it is a member of package old-time-1.0.0.0, which is hidden > > so I added 'old-time' to the 'build-depends' line in the .cabal file > > but then it fails building with > > Building hsql-1.7... > [1 of 2] Compiling Database.HSQL.Types ( Database/HSQL/Types.hs, dist/ > build/Database/HSQL/Types.o ) > > Database/HSQL/Types.hs:134:18: Not in scope: type variable `forall' > > Database/HSQL/Types.hs:134:25: Not in scope: type variable `a' > > Database/HSQL/Types.hs:134:27: > Illegal operator `.' in type `forall a . (Int > -> FieldDef > -> (FieldDef -> > CString -> Int -> IO a) -> IO a)' > (Use -XTypeOperators to allow operators in types) >
This means you need -XRank2Polymorphism or maybe -XExistentialQuantification. > etc... > > At this point, it goes over my head... > > --------------- > > What the hell, I'll use HaskellDB and FlatDB, but then I get this > message while building HaskellDB : > > src/Database/HaskellDB/HDBRec.hs:106:11: > Illegal signature in pattern: l f a > Use -XPatternSignatures to permit it > > when I add 'PatternSignatures' to the 'Extensions:' line in .cabal, > it fails configuring with : > > Setup.hs: haskelldb.cabal:8: Parse of field 'extensions' failed: > > Jeeeesus, nevermind, I'll try Takusen Are you sure you specified the right extensions? (correct spelling, correct separators) Unfortunately readP doesn't give you nice error messages. > > --------------- > > with Takusen : > > $ runhaskell Setup.hs configure > > Setup.hs:26:7: > Could not find module `Distribution.Program': > Use -v to see a list of the files searched for. > > I give up... > > ---------------- That means that Takusen requires an older Cabal. I'd have to look at the code to see how hard it would be to fix this. > Is there any simple way to do it though ? Is there any problems with > Cabal that I need to work around ? > > Help !! > > Manu > > > _______________________________________________ > Haskell-Cafe mailing list > Haskell-Cafe@haskell.org > http://www.haskell.org/mailman/listinfo/haskell-cafe _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe