* Jakub Wilk <jwilk@debian.org>, 2013-05-17, 19:05:
override_dh_auto_install: set -ex; for python in $(PYTHON3); do \ $$python setup.py install \ --root=debian/debmake\ --install-layout=deb; \ donesetup.py install won't overwrite existing files (unless you use --force),
Minor correction: it does overwrite existing files if mtime of the new file is bigger. (So in fact, which shebang you end up with is timing-dependent. See also bug #547510.)
-- Jakub Wilk