Re: [Haskell-beginners] -fglasgow-exts in .cabal

Thank you Sumit. This is how far I got: if I put this right after hs-source-dirs: default-extensions: FlexibleInstances , it works: ghc asks for MultiParamTypeClasses option. However if I add FlexibleInstances, MultiParamTypeClasses - either separated with comma or on the next line, the compiler parses .cabal and tries to build however prompts for FlexibleInstances again. How would I specify >1 option?