File tmux-socket-path.patch of Package tmux

Index: tmux-2.2/tmux.c
===================================================================
--- tmux-2.2.orig/tmux.c
+++ tmux-2.2/tmux.c
@@ -122,7 +122,7 @@ make_label(const char *label)
 	if ((s = getenv("TMUX_TMPDIR")) != NULL && *s != '\0')
 		xasprintf(&base, "%s/tmux-%u", s, uid);
 	else
-		xasprintf(&base, "%s/tmux-%u", _PATH_TMP, uid);
+		xasprintf(&base, "/run/tmux/%u", uid);
 
 	if (mkdir(base, S_IRWXU) != 0 && errno != EEXIST)
 		goto fail;