ghci doesn't automatically pick up libtcl & libtk, although they're in package.conf. LD_PRELOADing them works fine [plain ghc works as well]. Is this a feature? Tracing shows that libt{cl,k}83.so *are* opened. Changing the order in extra_libraries or moving them to extra_ld_opts doesn't help, either.

ghci -package TclHaskell ... Loading package TclHaskell ... linking ... /usr/local/lib/ghc-6.0.1//HSTclHaskell_cbits.o: unknown symbol `Tcl_AppendResult' ghc-6.0.1: panic! (the `impossible' happened, GHC version 6.0.1): can't load package `TclHaskell'

LD_PRELOAD=/usr/local/lib/libtcl83.so:/usr/local/lib/libtk83.so ghci -package TclHaskell ... Loading package TclHaskell ... linking ... done. Prelude>

[Not that that's any useful, but conclusion about the above might be relevant for other packages. Skipping Main ( philos.hs, ./philos.o ) Ok, modules loaded: Main, ConcurrentDebug, CHD_ConcurrentSampleVar, CHD_Label, CHD_ConcurrentQSemN, CHD_ConcurrentQSem, CHD_ConcurrentCVar, CHD_ConcurrentMain, CHD_ConcurrentChannel, CHD_ConcurrentMVar, CHD_DebugMsgChan, CHD_BaseTypes, CHD_BaseFunctions, CHD_GuiConfigWindow, CHD_Enviroment, PriorDoubleChannel. Prelude Main> main No compiled code for Tcl ] Package.conf: Package {name = "TclHaskell", auto = False, import_dirs = ["/usr/local/lib/ghc-6.0.1/imports/tclhaskell/"], source_dirs = [], library_dirs = ["/usr/local/lib/ghc-6.0.1/"], hs_libraries = ["HSTclHaskell"], extra_libraries = ["tcl83", "tk83", "HSTclHaskell_cbits" ], include_dirs = ["/usr/local/lib/ghc-6.0.1/include"], c_includes = [], package_deps = ["rts", "lang", "concurrent", "data"], extra_ghc_opts = ["-fglasgow-exts", "-fvia-C"], extra_cc_opts = [], extra_ld_opts = ["-L/usr/local/lib", "-lncurses"], framework_dirs = [], extra_frameworks = []}] -- Volker Stolz * http://www-i2.informatik.rwth-aachen.de/stolz/ * PGP * S/MIME