8 Sep
2015
8 Sep
'15
5:17 p.m.
You mean this? languageExtensions Nothing -- Nothing => the default case = Opt_NondecreasingIndentation -- This has been on by default for some time : delete Opt_DatatypeContexts -- The Haskell' committee decided to -- remove datatype contexts from the -- language: -- http://www.haskell.org/pipermail/haskell-prime/2011-January/003335.html (languageExtensions (Just Haskell2010)) So default is haskell2010+NondecreasingIndentation-DatatypeContexts But the standard library can not be made to adhere to haskell98/2010. I.e. Monad is now a subclass of Applicative. Silvio