Fabulous: Python library for printing images and fancy text to the terminal 16 years ago
The library is complaining about not being able to find gcc. It'll still fall back to the pure-python code and work properly. I made a release this morning to make that error message a less noisy debug message.
As for the blinking lights, rxvt based terminals like Terminal.app only support 4-bit color. I'll be making a 0.2 release soon to automatically downgrade colors for these types of terminals.