--- a/windows_installer.mk	Thu Jul 28 17:47:10 2022 +0200
+++ b/windows_installer.mk	Sun Jul 31 16:43:25 2022 +0200
@@ -14,6 +14,8 @@
 msysdir=msys32
 MSYS_ROOT=$(CURDIR)/$(msysdir)
 
+XVFBRUN ?= xvfb-run
+
 mingw32dir=$(msysdir)/mingw32
 mingw32finaldir=installer/mingw32