Hi, Neil--
On 1/3/08, Neil Mitchell
Hi Victor,
-package-name base
should do the thing
Thanks very much, that is the correct flag to allow built in syntax. However, turning that flag on also does other stuff, which breaks new things. Taking the module Prelude.hs, from a darcs checkout of the libraries:
C:\Documents\Uni\packages\base>ghci Prelude.hs -i -cpp -fglasgow-exts GHCi, version 6.8.1: http://www.haskell.org/ghc/ :? for help Loading package base ... linking ... done. Ok, modules loaded: Prelude.
i.e. you can load the Prelude. However, specifying -package-name base:
C:\Documents\Uni\packages\base>ghci Prelude.hs -i -cpp -fglasgow-exts -package-name base GHCi, version 6.8.1: http://www.haskell.org/ghc/ :? for help
<interactive>:1:22: Failed to load interface for `System.IO': it is not a module in the current program, or in any known package.
<interactive>:1:22: Not in scope: `System.IO.stderr'
<interactive>:1:22: Not in scope: `System.IO.stdin' : panic! (the 'impossible' happened) (GHC version 6.8.1 for i386-unknown-mingw32): interactiveUI:setBuffering
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
Yeah, I've seen this before. One thing is that I generally avoid running code that uses the GHC API in GHCi, because I saw some reference somewhere to the fact that data structures can get mixed up that way, and it just seems to lead to madness :-) I've definitely seen the setBuffering panic message before, though haven't filed a bug report since I can't reproduce it reliably. In GHC, though, I can compile base package modules to Core just fine, if I provide the right import flags (-i and -I) so it can find all the dependencies. (If you want to see the complete list of flags I'm using, let me know :-)
This is the same behaviour as loading Prelude without specifying -i. Moving -i to other places still gives the same behaviour. Does package-name base also imply other flags (perhaps -i. ?) which are negatively effecting my particular use.
I don't know, but in GHC (as opposed to GHCi), it all works. I can post some sample code if that would help; let me know. Cheers, Tim -- Tim Chevalier * http://cs.pdx.edu/~tjc * Often in error, never in doubt "More than at any other time in history, mankind faces a crossroads. One path leads to despair and utter hopelessness. The other, to total extinction. Let us pray we have the wisdom to choose correctly."--Woody Allen