pyVows install error

Question

Estou instalando o pyVows conforme indicado no link link , mas isso me dá um erro:

$ sudo apt-get install libxslt-dev libxml2-dev libevent-dev
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package libxslt-dev
E: Unable to locate package libxml2-dev
E: Unable to locate package libevent-dev