Hello all, I'm trying to use CPP-defined strings in a Haskell module, like this: main :: IO () main = putStrLn FOO This of course will not work: ghc -DFOO="hello world" --make Main.hs -o test You'll get this error message: ./Main.hs:6:16: Not in scope: `hello' ./Main.hs:6:22: Not in scope: `world' Either of these will do what I want: ghc -DFOO="\"hello world\"" --make Main.hs -o test ghc -DFOO='"hello world"' --make Main.hs -o test # (that's double quotes inside single quotes) However, passing the same CPP definition via cabal does not work. runhaskell Setup.hs build --ghc-options=-DFOO="\"hello world\"" runhaskell Setup.hs build --ghc-options=-DFOO='"hello world"' With either of these commands, I get the same error message as above. This is understandable, since cabal has to evaluate the string before sending it to GHC, so I lose my escaped quotes. Any idea how I could change the Haskell module or the command line argument so that I get what I want? I've tried many combinations of quotes and escaped quotes with no luck. Thanks, - Phil