RPI Zero2 W scipy dependency fails to install

[VaporwareII]

When installing on a zero 2 W, the scipy install dies on numpy. It's a memory issue, since you only have 300 some MB. You'll need to increase the swapfile size, at least temporarily. Alternatively install the dependencies on a full size Pi4 and transfer the folders.

also don't forget to run apt get update.

I followed the instructions at:
https://pimylifeup.com/raspberry-pi-swap-file/

to save some clicks, here's the terminal commands

sudo dphys-swapfile swapoff
sudo nano /etc/dphys-swapfile
ctrl-w
CONF_SWAPSIZE=100
---change 100 to 1024 or 2048. I wasted enough time last night. I changed it to 2048 and it finished in about an hour.
ctrl-x
y
sudo dphys-swapfile setup
sudo dphys-swapfile swapon
----then reboot
sudo reboot