Can't disable an env in a single file

I’ve got a project all written in ES6, except for a single file that is in ES5.

In my .eslintrc:

env:
  es6: true
  node: true
  browser: true

In the single ES5 file:

/*eslint-env es6:false*/

const fn = () => {};

I expected to get an eslint error for the fat arrow, but there’s no error.

[ejosafat]

So in the end there is no plan to add this feature (disabling an env in a comment)? It’s quite useful when you are gradually migrating your app from ES5 and ES6 and have a mix of both in the same folder, and it’s always better to remove comments disabling es6 as you migrate rather than adding them to enable it.

[demisx]

Looks like this is now availabe, at least in v3.3.1 I am using:

/* eslint-env es6 */

More here: http://eslint.org/docs/user-guide/configuring