I installed diagrams, and it seems to be there, but GHCi doesn't find it. I tried adding the local sandbox to the command line (-package-db), but still no luck Any suggestions? C:\Users\guthrie> C:\Users\guthrie>cabal install diagrams Resolving dependencies... All the requested packages are already installed: diagrams-1.2 Use --reinstall if you want to reinstall anyway. I find it in: C:\Users\guthrie\.cabal-sandbox\i386-windows-ghc-7.6.3-packages.conf.d (diagrams-1.2, diagrams-contrib, -core, -lib, -svg) But running: "cabal repl" or using the GHC(i) flag "-package-db=..." fail to find it: C:\Users\guthrie>cabal repl GHCi, version 7.6.3: http://www.haskell.org/ghc/ :? for help Loading package ghc-prim ... linking ... done. Loading package integer-gmp ... linking ... done. Loading package base ... linking ... done. Prelude> :m + Diagrams <no location info>: Could not find module `Diagrams' It is not a module in the current program, or in any known package. Prelude> :m + Diagrams.Prelude <no location info>: Could not find module `Diagrams.Prelude' It is not a module in the current program, or in any known package. Prelude> ----------------------------------------------------------