gistfile1.coffee

# mixin ---------------------------------------------
mixins = require 'mixins'

module.exports = mixins.foo =

  bindings:
    '.js-mixin-binding-target': 'someModelAttr'

  mixinMethod: ->
    # do something

# view ---------------------------------------------
View = require 'views/base/view'
mixins = require 'mixins'

module.exports = class BarView extends View

  _(@prototype).extend mixins.foo
  _(@prototype.bindings).extend
    '.js-view-binding-target': 'otherModelAttr'
    
  viewMethod: ->
    # do something

backbone-deep-model を将来的に使わなくなって uninstall したときに動かなくなるのも困るので、結局 jquery の extend を利用することにした