From 68f01e2424fa65307943f47468d95d4c3062d44d Mon Sep 17 00:00:00 2001
From: Majiir Paktu <majiir@nabaal.net>
Date: Fri, 8 Jul 2022 00:13:47 -0400
Subject: [PATCH] pythonPackages.xlib: fix 'No protocol specified'

Fixes an upstream bug (python-xlib/python-xlib#207). Without this patch,
streamdeck-ui breaks on NixOS systems running GNOME on Xorg.
---
 pkgs/development/python-modules/xlib/default.nix    |  4 ++++
 .../xlib/fix-no-protocol-specified.patch            | 13 +++++++++++++
 2 files changed, 17 insertions(+)
 create mode 100644 pkgs/development/python-modules/xlib/fix-no-protocol-specified.patch

diff --git a/pkgs/development/python-modules/xlib/default.nix b/pkgs/development/python-modules/xlib/default.nix
index edb4761af3a8..05d5e095a163 100644
--- a/pkgs/development/python-modules/xlib/default.nix
+++ b/pkgs/development/python-modules/xlib/default.nix
@@ -22,6 +22,10 @@ buildPythonPackage rec {
     sha256 = "155p9xhsk01z9vdml74h07svlqy6gljnx9c6qbydcr14lwghwn06";
   };
 
+  patches = [
+    ./fix-no-protocol-specified.patch
+  ];
+
   nativeBuildInputs = [ setuptools-scm ];
   buildInputs = [ xorg.libX11 ];
   propagatedBuildInputs = [ six ];
diff --git a/pkgs/development/python-modules/xlib/fix-no-protocol-specified.patch b/pkgs/development/python-modules/xlib/fix-no-protocol-specified.patch
new file mode 100644
index 000000000000..1f3ab927f840
--- /dev/null
+++ b/pkgs/development/python-modules/xlib/fix-no-protocol-specified.patch
@@ -0,0 +1,13 @@
+diff --git a/Xlib/xauth.py b/Xlib/xauth.py
+index 2ed7dd5..303bd49 100644
+--- a/Xlib/xauth.py
++++ b/Xlib/xauth.py
+@@ -120,6 +120,8 @@ class Xauthority(object):
+         matches = {}
+ 
+         for efam, eaddr, enum, ename, edata in self.entries:
++            if enum == b'' and ename not in matches:
++                enum = num
+             if efam == family and eaddr == address and num == enum:
+                 matches[ename] = edata
+