···6565- [Elm](https://elm-lang.org/) programming language
6666- [Haskell](https://docs.haskellstack.org/en/stable/README/) programming language
6767- [Node.js](https://nodejs.org/) programming language with the [Yarn](https://yarnpkg.com/) package manager
6868+- [Just](https://github.com/casey/just) command runner (improved `make`)
6869- [Devd](https://github.com/cortesi/devd) web server for development (optional)
6970- [Watchexec](https://github.com/watchexec/watchexec) watching for file changes (optional)
7071- [Elm Proofread](https://github.com/icidasset/elm-proofread) documentation tests (optional)
···8081yarn install
81828283# 3. Build, start server & watch for changes
8383-make
8484+just
8485```