$NetBSD: patch-configure.in,v 1.1 2020/09/03 15:26:22 ryoon Exp $

--- configure.in.orig	2020-08-28 21:32:29.000000000 +0000
+++ configure.in
@@ -22,4 +22,4 @@ SRCDIR=$(dirname $0)
 TOPSRCDIR="$SRCDIR"
 export OLD_CONFIGURE="$SRCDIR"/old-configure
 
-exec python3 "$TOPSRCDIR/configure.py" "$@"
+exec ${PYTHON3} "$TOPSRCDIR/configure.py" "$@"