use less from components

IPython/frontend/html/notebook/fabfile.py

@@ -1,20 +1,21 b''
 """ fabfile to prepare the notebook """
 
 from fabric.api import local,lcd
 from fabric.utils import abort
 import os
 
 static_dir = 'static'
 components_dir = os.path.join(static_dir, 'components')
 
 
 def css(minify=True):
     """generate the css from less files"""
     if minify not in ['True', 'False', True, False]:
         abort('minify must be Boolean')
     minify = (minify in ['True',True])
 
     min_flag= '-x' if minify is True else ''
+    lessc = os.path.join('components', 'less.js', 'bin', 'lessc')
     with lcd(static_dir):
-        local('lessc {min_flag} less/style.less css/style.min.css'.format(min_flag=min_flag))
+        local('{lessc} {min_flag} less/style.less css/style.min.css'.format(**locals()))