executable y
    -- Import common warning flags.
    import:             warnings

    -- .hs or .lhs file containing the Main module.
    main-is:            Main.hs

    -- Modules included in this executable, other than Main.
    -- other-modules:

    -- LANGUAGE extensions used by modules in this package.
    -- other-extensions:

    -- Other library packages from which modules are imported.
    build-depends:      base

    -- Directories containing source files.
    hs-source-dirs:     exe

    -- Extra tools (e.g. alex, hsc2hs, ...) needed to build the source.
    build-tool-depends: happy

    -- Base language which the package is written in.
    default-language:   Haskell2010