(Is this the best place for cabal help?) I'm trying to install Takusen and build the tests on an Ubuntu 10.4 machine, with haskell-platform 2010.1.0.0.1. Takusen itself built and installed correctly. When building the tests I get this failure: Building Takusen-0.8.7... Building executable takusen_tests... Creating dist/build/takusen_tests (and its parents) Creating dist/build/takusen_tests/takusen_tests-tmp (and its parents) /usr/bin/ghc --make -o dist/build/takusen_tests/takusen_tests -hide-all-packages -fbuilding-cabal-package -no-user-package-conf -package-conf dist/package.conf.inplace -i -idist/build/takusen_tests/takusen_tests-tmp -i. -idist/build/autogen -Idist/build/autogen -Idist/build/takusen_tests/takusen_tests-tmp -optP-DUSE_NEW_EXCEPTIONS -optP-include -optPdist/build/autogen/cabal_macros.h -odir dist/build/takusen_tests/takusen_tests-tmp -hidir dist/build/takusen_tests/takusen_tests-tmp -stubdir dist/build/takusen_tests/takusen_tests-tmp -package-id QuickCheck-2.1.0.3-c608a0a2c555bdf292cfea5b3273ac6b -package-id base-4.2.0.0-2cc27b7e43511c4ca001642a7f77a8f6 -package-id mtl-1.1.0.2-23ca4de7c573fd4df309067199a40634 -package-id old-time-1.0.0.3-9efceb2bb905784e503d6cf147359f62 -package-id random-1.0.0.2-cf650c34bae72c01e165a0d26c11236b -package-id time-1.1.4-1ced433acd576e314843b083f147bc38 -package-id Takusen-0.8.7 -O -XCPP -XDeriveDataTypeable -XScopedTypeVariables ./Main.lhs <command line>: cannot satisfy -package-id Takusen-0.8.7 (use -v for more information) (and that was the -v output) There's no clue as to why "-package-id Takusen-0.8.7" cannot be satisfied. "ghc-pkg list" shows the package (in the global database), as does "cabal list Takusen". Thanks, Alistair