Hello, I am trying to "cabal install" HSQL. I am using ghc 6.8.2. I get the following error about a non-visible/hidden package (old-time-1.0.0.0): vigalchin@ubuntu:~$ cabal install hsql Resolving dependencies... 'hsql-1.7' is cached. [1 of 1] Compiling Main ( Setup.lhs, dist/setup/Main.o ) Linking dist/setup/setup ... Configuring hsql-1.7... Warning: No 'build-type' specified. If you do not need a custom Setup.hs or ./configure script then use 'build-type: Simple'. Preprocessing library hsql-1.7... Building hsql-1.7... 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 cabal: Error: some packages failed to install: hsql-1.7 failed during the building phase. The exception was: exit: ExitFailure 1 vigalchin@ubuntu:~$ I don't see (old-time-1.0.0.0) with parens around it so I am confused: vigalchin@ubuntu:~$ ghc-pkg list /usr/local/lib/ghc-6.8.2/package.conf: Cabal-1.2.3.0, GLUT-2.1.1.1, HUnit-1.2.0.0, OpenGL-2.2.1.1, QuickCheck-1.1.0.0, array-0.1.0.0, base-3.0.1.0, bytestring-0.9.0.1, cgi-3001.1.5.1, containers-0.1.0.1, directory-1.0.0.0, fgl-5.4.1.1, filepath-1.1.0.0, (ghc-6.8.2), haskell-src-1.0.1.1, haskell98-1.0.1.0, hpc-0.5.0.0, html-1.0.1.1, mtl-1.1.0.0, network-2.1.0.0, old-locale-1.0.0.0, old-time-1.0.0.0, packedstring-0.1.0.0, parallel-1.0.0.0, parsec-2.1.0.0, pretty-1.0.0.0, process-1.0.0.0, random-1.0.0.0, readline-1.0.1.0, regex-base-0.72.0.1, regex-compat-0.71.0.1, regex-posix-0.72.0.2, rts-1.0, stm-2.1.1.0, template-haskell-2.2.0.0, time-1.1.2.0, unix-2.3.0.0, xhtml-3000.0.2.1 /home/vigalchin/.ghc/i386-linux-6.8.2/package.conf: Cabal-1.4.0.1, GLFW-0.3, HDBC-1.1.5, HTTP-3001.0.4, MonadRandom-0.1.1, Stream-0.2.6, Takusen-0.8.3, X11-1.4.2, arrows-0.4, binary-0.4.2, category-extras-0.53.5, chp-1.1.0, dlist-0.4.1, event-list-0.0.7, ipc-0.0.3, midi-0.0.6, mtl-1.1.0.1, network-bytestring-0.1.1.2, non-negative-0.0.3, posix-realtime-0.0.0.1, posix-realtime-0.0.0.2, probability-0.2.1, quantum-arrow-0.0.4, unix-2.4.0.0, zlib-0.4.0.4 ?? What is the history of old-time package? Regards, Vasili