Problems with Cairo

Hi, Im tried to install in mi macbook pro computed with MacOS Mojave and i complete this but when i tried the example i have this error

Tests-MacBook-Pro:ManimInstall test$ python3 -m manim example_scenes.py WriteStuff -pl
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/Users/daniellara/ManimInstall/manim.py", line 2, in <module>
    import manimlib
  File "/Users/daniellara/ManimInstall/manimlib/__init__.py", line 4, in <module>
    import manimlib.extract_scene
  File "/Users/daniellara/ManimInstall/manimlib/extract_scene.py", line 9, in <module>
    from manimlib.scene.scene import Scene
  File "/Users/daniellara/ManimInstall/manimlib/scene/scene.py", line 12, in <module>
    from manimlib.camera.camera import Camera
  File "/Users/daniellara/ManimInstall/manimlib/camera/camera.py", line 9, in <module>
    import cairo
ModuleNotFoundError: No module named 'cairo'
Tests-MacBook-Pro:ManimInstall test$ 

[RonaldQiao]

I faced the same error when installing pycario, do I have to install cairocffi first?

[daniel-lara-ec]

Hi! I solve this problem with this code

export PKG_CONFIG_PATH="/usr/local/opt/libffi/lib/pkgconfig"
export LDFLAGS="-L/usr/local/opt/libffi/lib"

and install pycairo

pip install pycairo

Thanks for your help!