I was following the [rpi-setup-guide](https://gist.github.com/arnaudjuracek/1b760c00d0e00a685341a93942a10cb4#file-rpi-setup-guide-md) and the 'Installation' section of the xy-server readme but still got the following error: `No package 'cairo' found`. Doing this worked: `sudo apt-get install libcairo2-dev libjpeg-dev libgif-dev`