# HG changeset patch
# User Yuya Nishihara <yuya@tcha.org>
# Date 1612436205 -32400
# Node ID 128a17d8436fcdf04139739d8a38a270defef99a
# Parent  33dbc9f785e719fb583e8e3c2984634258f1fd77
procutil: extend gui test to detect wayland session (issue6479)

diff -r 33dbc9f785e7 -r 128a17d8436f mercurial/utils/procutil.py
--- a/mercurial/utils/procutil.py	Tue Feb 02 23:44:44 2021 +0530
+++ b/mercurial/utils/procutil.py	Thu Feb 04 19:56:45 2021 +0900
@@ -546,7 +546,11 @@
             # pure build; use a safe default
             return True
     else:
-        return pycompat.iswindows or encoding.environ.get(b"DISPLAY")
+        return (
+            pycompat.iswindows
+            or encoding.environ.get(b"DISPLAY")
+            or encoding.environ.get(b"WAYLAND_DISPLAY")
+        )
 
 
 def gui():