Errors when trying to build PHP 8.1 environment

[jasonevines]

I am getting these errors when trying to build a PHP 8.1 local environment:

"Problem 1
- Root composer.json requires PHP extension ext-igbinary * but it is missing from your system. Install or enable PHP's igbinary extension.
Problem 2
- Root composer.json requires PHP extension ext-tidy * but it is missing from your system. Install or enable PHP's tidy extension."

And:

"Exception: Extension '{'configuration': {}, 'name': u'apcu'}' is unknown."

I am encountering these errors on my Intel iMac. I haven't tried on my Apple Silicon Macbook.

[jasonevines]

Apparently related issues:

#138
#135