I'm puzzled as to why this build fails (ghc-6.6.1, cabal-1.6 (actually HEAD, I think, but close enough, and winXP). The sqlite.h header file is in C:\Progra~1\sqlite3\, which is clearly given with the -I option. Alistair c:\ghc\ghc-6.6.1\bin\ghc.exe -package-name Takusen-0.8.4 --make -hide-all-packag es -no-user-package-conf -i -idist\build -i. -idist\build\autogen -Idist\build\a utogen -Idist\build -IC:\Progra~1\sqlite3\ -IC:/PROGRA~1/POSTGR~1/8.1/include -I C:/PROGRA~1/POSTGR~1/8.1/include/server -IC:\Oracle\product\10.2.0\client_1\oci\ include -optP-include -optPdist\build\autogen\cabal_macros.h -odir dist\build -h idir dist\build -package QuickCheck-1.0.1 -package base-2.1.1 -package mtl-1.0.1 -package time-1.1.1 -O -cpp Database.ODBC.Enumerator Database.ODBC.OdbcFunction s Database.Oracle.Enumerator Database.Oracle.OCIConstants Database.Oracle.OCIFun ctions Database.PostgreSQL.Enumerator Database.PostgreSQL.PGFunctions Database.S qlite.Enumerator Database.Sqlite.SqliteFunctions Database.Enumerator Database.Ut il Database.Stub.Enumerator Control.Exception.MonadIO Foreign.C.UTF8 Database.In ternalEnumerator [ 7 of 15] Compiling Database.Sqlite.SqliteFunctions ( Database/Sqlite/SqliteFun ctions.lhs, dist\build/Database/Sqlite/SqliteFunctions.o ) C:\DOCUME~1\bayleya\LOCALS~1\Temp\ghc4176_0\ghc4176_0.hc:8:20: sqlite.h: No such file or directory .. [many more "implicit declaration of function" warnings follow as a result of this one]