macOS instructions are incomplete; assumes python-setuptools are already installed

[rmohns]

The instructions for macOS are incomplete; they will fail if python-setuptools is not already installed.

Consider modifying this:

brew install libusb git

to this:

brew install libusb git
brew install python-setuptools

[xingshou]

I have encountered another error related to pylzma and solved it with the following command in Mac OS X 15.1.

CFLAGS="-Wno-error=int-conversion" pip install pylzma

[genhack]

before CFLAGS="-Wno-error=int-conversion" pip install pylzma do: pip install --upgrade pip setuptools wheel