Haskell for Mac 1.4.0 is out!
This release comes with a range of improvements, but the outstanding feature is the ability to install packages from within the app.
By installing the Haskell command line tools (HaskellCLI) from the "Command Line" tab in the app preferences, Haskell for Mac gets a new "Target" menu. In addition to the package manager, this menu gives you access to running interactive Haskell executables in Terminal windows right from within Haskell for Mac. For more details, check out the release notes.