elm: how get just one line with the elm version? - elm

Question

How get just one line with the elm version ?
For now I get this:
$ elm-make --version
elm-make 0.17 (Elm Platform 0.17.0)
Usage: elm-make [FILES...] [--output FILE] [--yes] [--report FORMAT] [--warn]
[--docs FILE] [--prepublish] [--prepublish-core]
build Elm projects
Available options:
-h,--help Show this help text
--output FILE Write result to the given .html or .js FILE.
--yes Reply 'yes' to all automated prompts.
--report FORMAT Format of error and warning reports (e.g.
--report=json)
--warn Report warnings to improve code quality.
--docs FILE Write documentation to FILE as JSON.
Examples:
elm-make Main.elm # compile to HTML in index.html
elm-make Main.elm --output main.html # compile to HTML in main.html
elm-make Main.elm --output elm.js # compile to JS in elm.js
elm-make Main.elm --warn # compile and report warnings
Full guide to using elm-make at <https://github.com/elm-lang/elm-make>
$

Answer 1

Two of the other tools in the Elm Platform print just the version (at least for me on OSX Elm 0.17.0):
% elm reactor --version
0.17.0
% elm repl --version
0.17.0

Answer 2

elm-make --version 2>&1 | head -n 1
Not sure if the redirection is strictly necessary; some tools simply print to stdout in this scenario.

Answer 3

As of version 0.18.0, the plain elm tool works:
$ elm --version
0.18.0