Update macOS install script to reflect Python 3.8.x (rather than 3.7)

[LeeBinder]

brew update
brew install [email protected] libxslt re2 pkg-config
/usr/local/opt/[email protected]/bin/python3 -m venv ~/gs-venv
PKG_CONFIG_PATH="/usr/local/opt/libxml2/lib/pkgconfig" ~/gs-venv/bin/pip install --no-binary lxml --upgrade git+https://github.com/ArchiveTeam/grab-site

👍

[TheTechRobo]

grab-site does not work in Python 3.9: ArchiveTeam/ludios_wpull#20

[LeeBinder]

Hi @TheTechRobo - that's helpful to know. You have admin access here, don't you. How about if you add this info to the https://github.com/ArchiveTeam/grab-site#install-on-macos section? To add clarity that python 3.7 is actually required 👍.

[ivan]

Thanks, I have updated it to use [email protected].

I considered adding a disclaimer just now, but people incorrectly mutate the install steps in many different ways and I don't really want to cover every possible thing in the README.

[TheTechRobo]

@LeeBinder I don't have admin access here.

[LeeBinder]

Fine - Ivan already updated the manual, and grab-site is working here now :)