First empty dbus daemon that actually gets loaded by gnome-shell.

conf/org.gnome.pass.search.conf

@@ -0,0 +1,10 @@
+<?xml version="1.0"?><!--*-nxml-*-->
+<!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
+ "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
+
+<busconfig>
+  <policy context="default">
+    <allow send_destination="org.gnome.pass.search"
+           send_interface="org.gnome.pass.search"/>
+  </policy>
+</busconfig>

conf/org.gnome.pass.search.desktop

@@ -0,0 +1,9 @@
+[Desktop Entry]
+Version=1.0
+Categories=GNOME;Security;
+Icon=password-manager
+Name=Pass
+Comment=Gnome-shell search provider for pass
+Terminal=false
+Type=Application
+OnlyShowIn=GNOME;

conf/org.gnome.pass.search.ini

@@ -0,0 +1,5 @@
+[Shell Search Provider]
+DesktopId=org.gnome.pass.search.desktop
+BusName=org.gnome.pass.search
+ObjectPath=/org/gnome/pass/search
+Version=2

conf/org.gnome.pass.search.service.dbus

@@ -0,0 +1,4 @@
+[D-BUS Service]
+Name=org.gnome.pass.search
+Exec=/usr/lib/gnome-shell-search-pass/daemon.py
+SystemdService=org.gnome.pass.search

conf/org.gnome.pass.search.service.systemd

@@ -0,0 +1,7 @@
+[Unit]
+Description=Pass search provider for gnome-shell daemon
+
+[Service]
+Type=dbus
+BusName=org.gnome.Pass.search
+ExecStart=/usr/lib/gnome-shell-search-pass/daemon.py