Learn about the Elm programming language at elm-lang.org.
Installing the Compiler
Download the Haskell Platform 2012.2.0.0. Elm definitely works with GHC 7.4, so newer versions of the Haskell Platform may work too.
Once the Haskell Platform is installed:
cabal update ; cabal install elm
Installing the Server
cabal install elm-server
Using the executables
elm-server you need to add a new directory to your PATH.
Cabal should tell you where your executables are located upon successful installation.
For me, the executables were placed in
/home/evan/.cabal/bin which I
appended to the end of my PATH variable in my .bashrc file.
See this tutorial if you are new to changing your PATH in Unix/Linux.
A Test project
Now we will create a simple Elm project. The following commands will set-up a very basic project and start the Elm server.
mkdir helloElm cd helloElm echo import Mouse > Main.elm echo main = lift asText Mouse.position > Main.elm elm-server
The first two commands create a new directory and navigate into it. The
commands place a simple program into
Main.elm. Do this manually if you do not
echo. The final command starts the Elm server at localhost:8000,
allowing you to navigate to
Main.elm and see your first program in action.
elm package provides support for compilation of Elm code directly in Haskell and QuasiQuoting.
Check it out on Hackage if you are interested.