I'm looking for an alternative to HSQL for database connectivity -- the lack of prepared statements in HSQL is particularly worrisome. I installed HDBC, but when I tried running a simple program that used it, I get the error message ghc-6.6: /usr/local/lib/HDBC-postgresql-1.0.1.0/ghc-6.6/HSHDBC-postgresql-1.0.1.0.o: unknown symbol `PQserverVersion' Looking more closely at the README.txt file there, it seems that the PostgreSQL driver is expecting 8.1, and I'm using 7.4.7. I installed the ODBC driver, and I know that in theory one can connect to my PostgreSQL server with ODBC, but as far as I can tell from the documentation, I would have to configure a separate DSN for every database instance that I would want to connect to, which makes it kind of useless for a utility that any user could pass database names to on the command line. The takusen package looks interesting, but when I checked it out and tried to build it (with "ghc --make -o setup Setup.hs"), I got the error message Setup.hs:6:7: Could not find module `Distribution.Compat.FilePath': it is hidden (in package Cabal-1.1.6) How do I work around these? Is there another library worth looking into?