It's a side effect of dynamic linking, or, lack of support for it in ghci. You can't work around it. I've tried.
Sent from my iPad
On Dec 27, 2010, at 9:14 PM, Alexander Bau
GHCi and cabal didn't work, but ghc --make did.
Neither GHCi, cabal nor ghc --make works.
I refactored my code, so that all TH related stuff does not depend on wxHaskell, i.e. wxHaskell doesn't need to be loaded during THs code generation. Then ghc --make works fine. But when using cabal, the same error occurs.
It seems to me that TH (when used with cabal) loads all packages specified at "Build-Depends" in your cabal file (whether they are needed or not). ghc --make instead just loads all packages, that are really needed for THs code generation.
But this is just a workaround and does not explain why TH does not work with wxHaskell. I think this is somehow related to the inability to use wxHaskell inside of GHCi [1], because then the same error occurs.
[1] http://comments.gmane.org/ gmane.comp.lang.haskell.wxhaskell.general/923
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