Add dependencies and finish the py-tornado package.

This adds the following packages:

 py-backports-shutil-get-terminal-size  py-nbformat
 py-backports-ssl-match-hostname        py-pathlib2
 py-entrypoints                         py-pickleshare
 py-futures                             py-pip
 py-ipykernel                           py-prompt-toolkit
 py-ipython-genutils                    py-ptyprocess
 py-ipywidgets                          py-simplegeneric
 py-jupyter-client                      py-singledispatch
 py-jupyter-console                     py-terminado
 py-jupyter-core                        py-traitlets
 py-jupyter-notebook                    py-wcwidth
 py-monotonic                           py-widgetsnbextension
 py-nbconvert

var/spack/repos/builtin/packages/npm/package.py

@@ -22,6 +22,7 @@
 # License along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
+import os
 from spack import *
 
 
@@ -32,9 +33,17 @@ class Npm(Package):
     # base http://www.npmjs.com/
     url      = "https://registry.npmjs.org/npm/-/npm-3.10.5.tgz"
 
+    version('3.10.9', 'ec1eb22b466ce87cdd0b90182acce07f')
     version('3.10.5', '46002413f4a71de9b0da5b506bf1d992')
 
-    depends_on('node-js', type='build')
+    depends_on('node-js')
+    
+    def setup_dependent_environment(self, spack_env, run_env, dependent_spec):
+        npm_config_cache_dir = "%s/npm-cache" % dependent_spec.prefix
+        if not os.path.isdir(npm_config_cache_dir):
+            mkdir(npm_config_cache_dir)
+        run_env.set('npm_config_cache', npm_config_cache_dir)
+        spack_env.set('npm_config_cache', npm_config_cache_dir)
 
     def install(self, spec, prefix):
         configure('--prefix={0}'.format(prefix))