maturin new --mixed generates a Python file with a tab

[itamarst]

Bug Description

Python standard is 4 spaces for indentation, not a tab:

$ maturin new --mixed yourpackage
$ cat yourpackage/python/yourproject/__init__.py
from .yourproject import *


__doc__ = yourproject.__doc__
if hasattr(yourproject, "__all__"):
	__all__ = yourproject.__all__   # <--- TAB

Your maturin version (maturin --version)

0.14.10

Your Python version (python -V)

3.9.16

Your pip version (pip -V)

22.0.4

What bindings you're using

None

Does cargo build work?

• Yes, it works

If on windows, have you checked that you aren't accidentally using unix path (those with the forward slash /)?

• Yes

Steps to Reproduce

maturin new --mixed yourpackage, look at __init__.py