Added option to install dependencies in CLI

senpy/VERSION

@@ -1 +1 @@
-0.6.0
+0.6.1

senpy/__main__.py

@@ -65,6 +65,11 @@ def main():
                         type=str,
                         default='plugins',
                         help='Where to look for plugins.')
+    parser.add_argument('--only-install',
+                        '-i',
+                        action='store_true',
+                        default=False,
+                        help='Do not run a server, only install the dependencies of the plugins.')
     args = parser.parse_args()
     logging.basicConfig()
     rl = logging.getLogger()
@@ -72,6 +77,9 @@ def main():
     app = Flask(__name__)
     app.debug = args.debug
     sp = Senpy(app, args.plugins_folder, default_plugins=args.default_plugins)
+    if args.only_install:
+        sp.install_deps()
+        return
     sp.activate_all()
     http_server = WSGIServer((args.host, args.port), app)
     try:

senpy/extensions.py

@@ -204,6 +204,21 @@ class Senpy(object):
     def validate_info(cls, info):
         return all(x in info for x in ('name', 'module', 'version'))
 
+    def install_deps(self):
+        for i in self.plugins.values():
+            self._install_deps(i._info)
+
+    @classmethod
+    def _install_deps(cls, info=None):
+        requirements = info.get('requirements', [])
+        if requirements:
+            pip_args = []
+            pip_args.append('install')
+            for req in requirements:
+                pip_args.append( req )
+            logger.info('Installing requirements: ' + str(requirements))
+            pip.main(pip_args) 
+
     @classmethod
     def _load_plugin_from_info(cls, info, root):
         if not cls.validate_info(info):
@@ -215,13 +230,7 @@ class Senpy(object):
         sys.path.append(root)
         (fp, pathname, desc) = imp.find_module(module, [root, ])
         try:
-            if requirements:
-                pip_args = []
-                pip_args.append('install')
-                for req in requirements:
-                    pip_args.append( req )
-                logger.info('Installing requirements: ' + str(requirements))
-                pip.main(pip_args) 
+            cls._install_deps(info)
             tmp = imp.load_module(module, fp, pathname, desc)
             sys.path.remove(root)
             candidate = None