pyzmq package stopped installing in imx6ul based single board computer

Issue description
pip3 install pyzmq==22.0.3 or pip3 install pyzmq does not install this package anymore on imx6ul based single board computer

Environment
Hardware: NXP imx6ul (https://www.phytec.com/product/phycore-imx6ul/)

OS
Yocto distribution based on https://www.phytec.eu/en/bsp-download/?bsp=BSP-Yocto-Ampliphy-i.MX6UL-PD21.2.1

NOTE1: On desktop distros, installation is still fine.
NOTE2: This problem occurred only yesterday. All the previous days it was installing fine.

What's the actual result?

1. Attached all possible trials to rectify error here - pyzmqerror.txt
2. Removed other packages which are required for our application (python-string-utils jsonschema websockets websocket-client schedule aiofiles ocpp) and tried installing only pyzmq. Did not work.

I know that this particular hardware will be unavailable for you guys to test. Please take help of logs and let me know if this can be solved.

Thanks!

As @phd commented, it was a compiler-not-found error. Since this is an embedded computer, OS is very minimal (~160MB) has no compiler in it. Cross compilation is the only method. For that we had to include a line in yocto/build/layer.conf file

IMAGE_INSTALL_append = " python3-pyzmq"

After recompiling the image with bitbake, pyzmq was available readily to use. Mistake we did is not observing this behaviour previously.