ESP32 in HomeKit "cmake" must be available on the PATH to use idf.py

I wanted to use my ESP32 Cam as camera in Homekit. I found an interesting project which works without bridge, but I have trouble to get it to work. I did in the Terminal on a Mac with MacOS Ventura:

cd /Users/<user>/Desktop/Skripte/Mikrocontroller/HomeKit
git clone https://github.com/maximkulkin/esp32-homekit-camera.git
git clone https://github.com/espressif/esp-idf.git
cd /Users/<user>/Desktop/Skripte/Mikrocontroller/HomeKit/esp-idf
sudo sh install.sh
source export.sh
cd /Users/<user>/Desktop/Skripte/Mikrocontroller/HomeKit/esp32-homekit-camera
git submodule update --init --recursive

until now everything is fine, but:

idf.py build

Output:

Executing action: all (aliases: build)
ESP-IDF v5.1-dev-3710-gacac972f70
"cmake" must be available on the PATH to use idf.py

It should have build the project for my esp32 If I add /usr/local/Desktop/Skripte/Mikrocontroller/HomeKit/esp-idf/tools/cmake via sudo nano /etc/paths, the output of idf.py build changes to zsh: command not found: idf.py

I solved it by installing cmake as app and adding it with PATH="/Applications/CMake.app/Contents/bin":"$PATH" to the path