does the code work when you compile it? (ie have a main = foo in the module and build it with ghc). There are certain problems with ghci (though i have no idea how it could be tripping them.)
@teuffy, could you share {{ghc --info}} and {{cabal --version}} with us
#8727: HLearn test on ubuntu Precise x64 within vagrant Box -----------------------------+---------------------------------- Reporter: teuffy | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.6.3 Resolution: | Keywords: Operating System: Linux | Architecture: x86_64 (amd64) Type of failure: Other | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: -----------------------------+---------------------------------- Comment (by teuffy): Replying to [comment:5 carter]: please? The code works when compiled the output -> Categorical {pdfmap = fromList [(Red,9.0),(Green,4.0),(Blue,3.0),(White,1.0)]} cabal --version cabal-install version 1.18.0.2 using version 1.18.1 of the Cabal library ghc --info [("Project name","The Glorious Glasgow Haskell Compilation System") ,("GCC extra via C opts"," -fwrapv") ,("C compiler command","/usr/bin/gcc") ,("C compiler flags"," -fno-stack-protector -Wl,--hash-size=31 -Wl ,--reduce-memory-overheads") ,("ar command","/usr/bin/ar") ,("ar flags","q") ,("ar supports at file","YES") ,("touch command","touch") ,("dllwrap command","/bin/false") ,("windres command","/bin/false") ,("perl command","/usr/bin/perl") ,("target os","OSLinux") ,("target arch","ArchX86_64") ,("target word size","8") ,("target has GNU nonexec stack","True") ,("target has .ident directive","True") ,("target has subsections via symbols","False") ,("LLVM llc command","llc") ,("LLVM opt command","opt") ,("Project version","7.6.3") ,("Booter version","7.4.1") ,("Stage","2") ,("Build platform","x86_64-unknown-linux") ,("Host platform","x86_64-unknown-linux") ,("Target platform","x86_64-unknown-linux") ,("Have interpreter","YES") ,("Object splitting supported","YES") ,("Have native code generator","YES") ,("Support SMP","YES") ,("Unregisterised","NO") ,("Tables next to code","YES") ,("RTS ways","l debug thr thr_debug thr_l thr_p dyn debug_dyn thr_dyn thr_debug_dyn") ,("Leading underscore","NO") ,("Debug on","False") ,("LibDir","/usr/lib/ghc") ,("Global Package DB","/usr/lib/ghc/package.conf.d") ,("Gcc Linker flags","[\"-Wl,--hash-size=31\",\"-Wl,--reduce-memory- overheads\"]") ,("Ld Linker flags","[\"--hash-size=31\",\"--reduce-memory-overheads\"]") ] -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8727#comment:6 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler