From bf371d05afedcaa67bb9ccf54f2f533c3adacf9a Mon Sep 17 00:00:00 2001
From: "Alex Xu (Hello71)" <alex_y_xu@yahoo.ca>
Date: Wed, 27 Jul 2022 01:15:51 -0400
Subject: virtualwl.eclass: use blocking read instead of kill

---
 eclass/virtualwl.eclass | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/eclass/virtualwl.eclass b/eclass/virtualwl.eclass
index 162f615..d2715bc 100644
--- a/eclass/virtualwl.eclass
+++ b/eclass/virtualwl.eclass
@@ -99,7 +99,8 @@ virtwl() {
 
 	# TODO: don't run addpredict in utility function. WLR_RENDERER=pixman doesn't work
 	addpredict /dev/dri
-	coproc VIRTWL { WLR_BACKENDS=headless exec tinywl -s 'echo $WAYLAND_DISPLAY'; }
+	local VIRTWL VIRTWL_PID
+	coproc VIRTWL { WLR_BACKENDS=headless exec tinywl -s 'echo $WAYLAND_DISPLAY; read _; kill $PPID'; }
 	local -x WAYLAND_DISPLAY
 	read WAYLAND_DISPLAY <&${VIRTWL[0]}
 
@@ -108,7 +109,7 @@ virtwl() {
 	retval=$?
 
 	[[ -n $VIRTWL_PID ]] || die "tinywl exited unexpectedly"
-	kill $VIRTWL_PID
+	exec {VIRTWL[0]}<&- {VIRTWL[1]}>&-
 
 	[[ $retval = 0 ]] || die "Failed to run '$@'"
 }
-- 
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