Comment 5 for bug 1611523

I disagree that this solution is definitely not the way to go. Other distros put it in their policy. See, for example, Debian's Python policy section 2.4.2 (https://www.debian.org/doc/packaging-manuals/python-policy/ch-python.html#s-interpreter_loc):

"The preferred specification for the Python 3 interpreter is /usr/bin/python3"

and

"Maintainers should not override the Debian Python interpreter using /usr/bin/env name. This is not advisable as it bypasses Debian's dependency checking and makes the package vulnerable to incomplete local installations of Python."

Ubuntu isn't bound by Debian policy, of course, but I agree with the reasoning.