Stylus ignores sprite

[droganov]

Hello, I try to integrate sprite with my test express app and have some problems.

# app.coffee
if app.settings.env is "development"
    sprite.sprites
        path: './assets/blocks/',
        watch: true,
        (err, result) ->
            console.log result

Sprite is able to generate images, but watch option is ignored.

#app.styl
body
  sprite header bg

Is rendered to:

#app.css
body {
  sprite: header bg;
}

Modules info:

{
    "name": "express-coffee"
  , "version": "0.1.6"
  , "private": true
  , "dependencies": {
      "express": "3.x" 
    , "coffee-script": "1.4.0"
    , "jade": "0.26.0"
    , "connect-assets": "2.3.3"
    , "stylus": "0.27.x"
    , "nib": "0.9.0"
    , "markdown": "0.4.0"
    , "passport": "0.1.15"
    , "which": "1.0.5"
    , "mongoose": "3.5.3"
    , "wrench": "1.4.4"
  }, "scripts": {
    "install": "node node_modules/coffee-script/bin/cake build",
    "start": "node server.js",
    "test": "mocha --require should --compilers coffee:coffee-script --colors"
  }, "devDependencies": {
      "coffee-script": "*"
    , "mocha": "*"
    , "should": "*"
    , "supertest": "*"
    , "request": "*"
    , "supervisor": "*"
    , "docco-husky": "*"
    , "puts": "*"
    , "node-inspector": "*"
    , "ejs": "*"
  }, 
  "engines": {
    "node": "~0.8.x",
    "npm": "1.1.x"
  }
}