Can't use command line options containing spaces

[bos]

I found myself wanting the other day to pass some specific RTS options to GHC on the command line, with those options varying depending on the version of GHC:

ghc-options: --with-rtsopts="-N -qg"

However, Cabal doesn't tokenize command line options, and GHC doesn't treat multiple --with-rtsopts arguments as building up a single string, so I found myself stuck. (I know about the "specify the options in a .c file, and that's what I did, but it's less elegant.)

[duncan]

You can use options containing spaces in a .cabal file. You just have to quote the entire option:

ghc-options: "--with-rtsopts=-N -qg"

The whole thing will be passed as a single option. The " will not be passed.

This escaping (using Haskell String syntax) is documented in the user guide.

[elga]

*  simyo