Cannot install from the source on macOS arm64

[fharper]

Describe the bug (mandatory)

Since there is no arm64 wheel, I want to install PyMuPDF from the source. When I run python setup.py install this is what I get: https://asciinema.org/a/RCFQwfLcdl02ou99WWx2jVtST

To Reproduce (mandatory)

Simply run python setup.py install

Expected behavior (optional)

Installing without error :)

Your configuration (mandatory)

macOS 11.5.2 build 20G95 on arm64
Python 3.9.7
pip 21.3

Additional context (optional)

I installed MuPDF with Homebrew since I'm on an M1 MacBook. I also successfully installed it by building from the source also, which was a second attempt since I wasn't sure if MuPDF was the issue. Everything from MuPDF seems fine.

I'm not sure what is going on here, any ideas?

[JorjMcKie]

Sorry, I cannot follow the video given in the link: every is scrolled away, before I see what's happening.
But anyway, best you connect to the guys doing the same thing: #875.
They seem to have found a way to install on M1.