diff -rupN --no-dereference harfbuzz-2.7.4/src/gen-def.py harfbuzz-2.7.4-new/src/gen-def.py
--- harfbuzz-2.7.4/src/gen-def.py	2020-12-27 01:01:18.000000000 +0100
+++ harfbuzz-2.7.4-new/src/gen-def.py	2020-12-27 21:23:44.516469823 +0100
@@ -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 ...]"