How to build: Quick version: git clone https://github.com/timthelion/elm-key-constants.git cd src ln -s ../elm-key-constants/Keyboard/ Keyboard/ elm --make -o GraphicalElm.elm open GraphicalElm.html Long version: - First you need a recentish version of the elm compiler - Then you need to get the key-constants library: git clone https://github.com/timthelion/elm-key-constants.git - Then go to the src directory and link in the key-constants library you just downloaded: cd src ln -s elm-key-constants/Keyboard/ Keyboard/ - Next you need to build graphical-elm: elm --make -o GraphicalElm.elm You can now run the editor with: open GraphicalElm.html