Support manhole debugging

Add optional support for manhole to all cli tools. Activated by signal
USR1.

2 files changed, 8 insertions, 0 deletions

diff --git a/crocoite/cli.py b/crocoite/cli.py
index be3538a..4ab2334 100644
--- a/crocoite/cli.py
+++ b/crocoite/cli.py
@@ -25,6 +25,11 @@ Command line interface
 import argparse, sys, signal, asyncio, os
 from enum import IntEnum
 from yarl import URL
+try:
+    import manhole
+    manhole.install (patch_fork=False, oneshot_on='USR1')
+except ModuleNotFoundError:
+    pass
 
 from . import behavior
 from .controller import SinglePageController, \
diff --git a/setup.py b/setup.py
index 7cf6b32..7344470 100644
--- a/setup.py
+++ b/setup.py
@@ -20,6 +20,9 @@ setup(
         'yarl',
         'multidict',
     ],
+    extras_require={
+        'manhole': ['manhole>=1.6'],
+    },
     entry_points={
     'console_scripts': [
             'crocoite-grab = crocoite.cli:single',