Dlib package in python is used for facial recognization. So while installing dlib directly you will be getting built-in error that setup does not build. So to resolve the errors and work eventually , we need to follow the following steps:

1. Creating a virtual environment

conda create --name opencv-env python=3.6

2. Activating the environment

conda activate opencv-env

3. Run command to install other dependencies

pip install -r requirements.txt

4. Now install cmake

conda install cmake

5. Now install dlib

conda install -c conda-forge dlib=19.17

The Package will then be running and you can run your file.

Thank You!