diff -Naur gvm-tools-20.10.1/setup.py gvm-tools-20.10.1.new/setup.py
--- gvm-tools-20.10.1/setup.py	1970-01-01 01:00:00.000000000 +0100
+++ gvm-tools-20.10.1.new/setup.py	2021-01-17 15:33:52.084117999 +0100
@@ -0,0 +1,11 @@
+#!/usr/bin/env python3
+# vim:se fileencoding=utf-8 :
+# pyproject2setup.py -- cheap builder for pyproject-based build systems
+# (c) 2019 Michał Górny
+# 2-clause BSD license
+
+from pyproject2setuppy.main import main
+
+
+if __name__ == '__main__':
+    main()