--- a/python/install_config.py	Fri Jan 24 17:53:23 2014 -0800
+++ b/python/install_config.py	Fri Jan 24 18:40:45 2014 -0800
@@ -11,6 +11,8 @@
 #   ln -s /home/jhammel/web/sync.ini /home/jhammel/.silvermirror
 # - handle cases where config is autogenerated BUT you still want
 #   to have some base (e.g. .gkrellm2/user_config)
+# - scp k0s.org:~/web/sync.ini ~/.silvermirror
+# - make idempotent
 
 # imports
 import imp
@@ -23,13 +25,21 @@
 SRC = 'http://k0s.org/hg/config' # config repository
 HOME = os.environ['HOME'] # home directory
 
+
 ### standalone functions
 
+def class_mapping(_type):
+    """returns a dict of (name, class) for objects in the current globals() of _type"""
+    return {name:cls for name, cls in globals().items() if cls.issubclass(_type)}
+
+
 def execute(*commands, **kwargs):
     """execute a series of commands"""
     for command in commands:
-        print (subprocess.list2cmdline(' '.join(command))
+        print (subprocess.list2cmdline(' '.join(command)))
         code = subprocess.call(command, **kwargs)
+        if code:
+            raise subprocess.CalledProcessError(code, command)
 
 def install_develop(package):
     """install k0s.ware for development"""
@@ -46,10 +56,9 @@
     execute(command)
     os.chdir(old_directory)
 
+
 ### generic step framework
 
-
-
 class Step(object):
     @classmethod
     def check(cls):
@@ -171,6 +180,12 @@
                       dest='list_steps',
                       action='store_true', default=False,
                       help="list steps to be run and exit")
+    parser.add_option('--all', dest='all',
+                      action='store_true', default=False,
+                      help="list all actions")
+    parser.add_option('--run', dest='run',
+                      action='append',
+                      help="run particular actions, in order")
     options, args = parser.parse_args()
 
     # plan steps
@@ -184,6 +199,11 @@
             print(step.name())
         parser.exit()
 
+    if options.all:
+        # list available steps
+        for sorted([]):
+            raise NotImplementedError("TODO")
+
     # execute steps
     for step in steps:
         instance = step()