From 45a4d04b7debe830518ea8ed23bc7255576211e5 2012-05-23 05:28:24
From: MinRK <benjaminrk@gmail.com>
Date: 2012-05-23 05:28:24
Subject: [PATCH] use [sys.exe, "-c", "…launch_new_instance()"] in launchers

instead of [sys.exe, module_path], which resulted in the modules being `__main__`, which caused problems.
---

diff --git a/IPython/parallel/apps/launcher.py b/IPython/parallel/apps/launcher.py
index 3a5a12e..0d8d2eb 100644
--- a/IPython/parallel/apps/launcher.py
+++ b/IPython/parallel/apps/launcher.py
@@ -24,6 +24,7 @@ import logging
 import os
 import re
 import stat
+import sys
 import time
 
 # signal imports, handling various platforms, versions
@@ -60,8 +61,8 @@ from IPython.utils.text import EvalFormatter
 from IPython.utils.traitlets import (
     Any, Integer, CFloat, List, Unicode, Dict, Instance, HasTraits,
 )
-from IPython.utils.path import get_ipython_module_path, get_home_dir
-from IPython.utils.process import find_cmd, pycmd2argv, FindCmdError
+from IPython.utils.path import get_home_dir
+from IPython.utils.process import find_cmd, FindCmdError
 
 from .win32support import forward_read_events
 
@@ -73,18 +74,13 @@ WINDOWS = os.name == 'nt'
 # Paths to the kernel apps
 #-----------------------------------------------------------------------------
 
+cmd = "from IPython.parallel.apps.%s import launch_new_instance; launch_new_instance()"
 
-ipcluster_cmd_argv = pycmd2argv(get_ipython_module_path(
-    'IPython.parallel.apps.ipclusterapp'
-))
+ipcluster_cmd_argv = [sys.executable, "-c", cmd % "ipclusterapp"]
 
-ipengine_cmd_argv = pycmd2argv(get_ipython_module_path(
-    'IPython.parallel.apps.ipengineapp'
-))
+ipengine_cmd_argv = [sys.executable, "-c", cmd % "ipengineapp"]
 
-ipcontroller_cmd_argv = pycmd2argv(get_ipython_module_path(
-    'IPython.parallel.apps.ipcontrollerapp'
-))
+ipcontroller_cmd_argv = [sys.executable, "-c", cmd % "ipcontrollerapp"]
 
 #-----------------------------------------------------------------------------
 # Base launchers and errors