diff -rupN --no-dereference harfbuzz-2.8.1/src/gen-def.py harfbuzz-2.8.1-new/src/gen-def.py
--- harfbuzz-2.8.1/src/gen-def.py	2021-05-04 02:09:38.000000000 +0200
+++ harfbuzz-2.8.1-new/src/gen-def.py	2021-05-05 09:12:35.801043013 +0200
@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/python3
 
 "usage: gen-def.py harfbuzz.def hb.h [hb-blob.h hb-buffer.h ...]"