elm-package.json

{
    "version": "1.0.0",
    "summary": "helpful summary of your project, less than 80 characters",
    "repository": "https://github.com/USER/PROJECT.git",
    "license": "BSD3",
    "source-directories": [
        "."
    ],
    "exposed-modules": [],
    "dependencies": {
        "TheSeamau5/elm-history": "1.0.0 <= v < 2.0.0",
        "elm-lang/core": "2.1.0 <= v < 3.0.0"
    },
    "elm-version": "0.15.1 <= v < 0.16.0"
}

Main.elm

import History
import Graphics.Element exposing (Element, show)
import Mouse
import Signal exposing ((<~))
import Task exposing (Task)

makeTitle : Int -> String
makeTitle n = "n = " ++ toString n

port title : Signal String
port title = makeTitle <~ counts

makeHash : Int -> String
makeHash n = "#" ++ toString n

port runTask : Signal (Task error ())
port runTask = History.setPath <~ (makeHash <~ counts)

update : () -> Int -> Int
update () n = n + 1

counts : Signal Int
counts = Signal.foldp update 0 Mouse.clicks

main : Signal Element
main = show <~ counts