我刚刚安装了一个Ubuntu仿生实例。它预装了cairo 1.14.6。我至少需要cairo 1.15.4才能使weasyprint正常工作。不幸的是，即使在安装了最新的cairo之后，python仍然会选择旧的库。任何线索，我将不胜感激。
# Install weasyprint dependencies
sudo apt-get install build-essential python3-dev python3-pip python3-setuptools python3-wheel python3-cffi libcairo2 libpango-1.0-0 libpangocairo-1.0-0 libgdk-pixbuf2.0-0 libffi-dev shared-mime-info
# Check cairo lib version, prints "1.15.10-2ubuntu0.1"
dpkg -l '*cairo*'
# Install weasyprint
pip3 install weasyprint
# Test cairo version catch by python, still prints "1.14.6"
python3 -c "import cairocffi; print(cairocffi.cairo_version_string())"