activate extension (#898)

nglview-js-widgets.json

@@ -0,0 +1,5 @@
+{
+  "load_extensions": {
+    "nglview-js-widgets/extension": true
+  }
+}

setup.py

@@ -26,46 +26,13 @@
 log.info('setup.py entered')
 log.info('$PATH=%s' % os.environ['PATH'])
 
+
 try:
     sys.argv.remove('--npm')
     rebuild_nglview_js = True
 except ValueError:
     rebuild_nglview_js = False
-try:
-    sys.argv.remove('--conda')
-    conda_build = True
-except ValueError:
-    conda_build = False
-
-def enable_extentions():
-    print("Trying to enable extensions")
-    # this is for normal users
-    # for developers, you should know what to do. :D
-    try:
-        # enable_nbextension_python does not exist in older notebook
-        # use try ... except in case users do not have notebook yet
-        from notebook.nbextensions import enable_nbextension_python
-        enable_nbextension_python('widgetsnbextension', user=False, sys_prefix=True)
-
-        subprocess.check_call([
-            'jupyter', 'nbextension', 'install', '--py',
-            '--sys-prefix', 'nglview'
-        ])
-
-        subprocess.check_call([
-            'jupyter', 'nbextension', 'enable', '--py',
-            '--sys-prefix', 'nglview'
-        ])
-        print("Seems OK")
-    except (ImportError, OSError, subprocess.CalledProcessError) as e:
-        # TODO: add type of exception here?
-        # Case: 
-        #    - notebook is not installed before nglview
-        #    - permission denied? 
-        print('Failed to enable extensions.')
-        print('Skip. Tips: Do it yourself')
-        print('    nglview install')
-        print('    nglview enable')
+
 
 def js_prerelease(command, strict=False):
     """decorator for building minified js/css prior to another command"""
@@ -176,6 +143,7 @@ def run(self):
          'nglview/static/index.js',
          'nglview/static/index.js.map',
         ]),
+        ('etc/jupyter/nbconfig/notebook.d' , ['nglview-js-widgets.json'])
     ],
     'tests_require': [
         'pytest'
@@ -245,5 +213,3 @@ def run(self):
 }
 
 setup(**setup_args)
-if not conda_build:
-    enable_extentions()