[Haskell-cafe] ghc-mod-5.4.0.0 and stack

Hi! I try to use last ghc-mod with stack. In Changelog (https://hackage.haskell.org/package/ghc-mod-5.4.0.0/changelog) I read: * Add support for the Stack build tool And I see new option: --with-stack=PATH stack executable to use So I do: $ ghc-mod --with-stack=/usr/local/bin/stack check src/Main.hs But I got this error: ghc-mod: cabal: readCreateProcess: runInteractiveProcess: exec: does not exist (No such file or directory) I don't understand it. If I specify path to stack - why ghc-mod still try to use cabal-install? And if cabal-install is still required - why is this new option for?? - Denis