This is an Emacs library that adds Org-Babel support for evaluating Elm code. Use of Elm > 0.19 is recommended.
You can download ob-elm from MELPA by running:
M-x package-install RET ob-elm RET
You could use the GitHub repository:
git clone https://github.com/BonfaceKilz/ob-elm
Add (elm . t) to your org-babel-do-load-languages:
(org-babel-do-load-languages
'org-babel-load-languages
'((elm . t)))