Support daemonization of GPG agent

libagent/gpg/__init__.py

@@ -226,6 +226,8 @@ def run_agent(device_type):
     p.add_argument('-v', '--verbose', default=0, action='count')
     p.add_argument('--server', default=False, action='store_true',
                    help='Use stdin/stdout for communication with GPG.')
+    p.add_argument('--daemon', default=False, action='store_true',
+                   help='Daemonize the agent.')
 
     p.add_argument('--pin-entry-binary', type=str, default='pinentry',
                    help='Path to PIN entry UI helper.')
@@ -236,6 +238,15 @@ def run_agent(device_type):
 
     args, _ = p.parse_known_args()
 
+    if args.daemon:
+        with daemon.DaemonContext():
+            run_agent_internal(args, device_type)
+    else:
+        run_agent_internal(args, device_type)
+
+
+def run_agent_internal(args, device_type):
+    """Actually run the server."""
     assert args.homedir
 
     log_file = os.path.join(args.homedir, 'gpg-agent.log')

setup.py

@@ -17,6 +17,7 @@ setup(
     ],
     install_requires=[
         'docutils>=0.14',
+        'python-daemon>=2.3.0',
         'wheel>=0.32.3',
         'backports.shutil_which>=3.5.1',
         'ConfigArgParse>=0.12.1',