weasyprint - установка в убунту.

Question

Я пытался установить weasyprint с помощью команды "pip install weasyprint".

Это дало мне ошибку:

requests 2.18.4 has requirement chardet<3.1.0,>=3.0.2, but you'll have 
chardet 2.3.0 which is incompatible.
tensorboard 1.8.0 has requirement html5lib==0.9999999, but you'll have 
html5lib 1.0.1 which is incompatible.
bleach 1.5.0 has requirement html5lib!=0.9999,!=0.99999, 
<0.99999999,>=0.999, but you'll have html5lib 1.0.1 which is 
incompatible.

Кто-нибудь знает как это исправить?