bwrap-helper: Do not filter dbus socket

This is not ideal security-wise, but the only way to protect my sanity
from whatever steam and some of my games try to do with the dbus socket.

pkgs/bwrap-helper/bwrap-helper.py

@@ -5,7 +5,6 @@ import argparse
 import os
 import shutil
 import subprocess
-import time
 
 
 def flat_map(f, iterable):
@@ -139,8 +138,7 @@ argument_groups = {
         ]),
     ]),
     "dbus": (False, [
-        *ro_bind(tmp_file("dbus"), "/run/dbus/system_bus_socket"),
+        *ro_bind("/run/dbus/system_bus_socket"),
-        "--unsetenv", "DBUS_SESSION_BUS_ADDRESS",
         *ro_bind(generate_tmp_file("machine-id", "0" * 32), "/etc/machine-id"),
     ]),
     "new-session": (True, [
@@ -202,27 +200,7 @@ if args.show_cmdline:
 assembled_args.append(args.program)
 assembled_args.extend(args.args)
 
-children = []
-if args.dbus:
-    children.append(
-        subprocess.Popen(
-            [
-                "xdg-dbus-proxy",
-                os.getenv("DBUS_SESSION_BUS_ADDRESS"),
-                tmp_file("dbus"),
-                "--filter"
-            ],
-            stdout=subprocess.PIPE,
-            stderr=subprocess.PIPE,
-        )
-    )
-    while not os.path.exists(tmp_file("dbus")):
-        time.sleep(0.1)
-
 try:
     subprocess.run(assembled_args)
 finally:
     shutil.rmtree(tmp_file(None))
-    for child in children:
-        child.terminate()
-        child.wait()

pkgs/bwrap-helper/default.nix

@@ -1,4 +1,4 @@
-{ bubblewrap, lib, makeWrapper, python3, stdenvNoCC, xdg-dbus-proxy }:
+{ bubblewrap, lib, makeWrapper, python3, stdenvNoCC }:
 stdenvNoCC.mkDerivation rec {
   name = "bwrap-helper";
 
@@ -11,7 +11,6 @@ stdenvNoCC.mkDerivation rec {
   buildInputs = [
     bubblewrap
     python3
-    xdg-dbus-proxy
   ];
 
   dontUnpack = true;