The stack runhaskell command

stack runhaskell [-- ARGUMENT(S) (e.g. stack runghc -- X.hs)]
                 [--[no-]ghc-package-path] [--[no-]stack-exe]
                 [--package PACKAGE] [--rts-options RTSFLAG] [--cwd DIR]

The stack runhaskell command is equivalent to the stack runghc command. For further information, see the stack runghc documentation.