Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: npm : Depends: nodejs-dev but it is not going to be installed E: Unable to correct problems, you have held broken packages.
A resposta à sua pergunta de por que está na saída de apt-get :
Para corrigir as dependências do pacote corrompidas, execute-o com a opção -f :
sudo apt-get install -f [PACKAGE...]
Você pode executar o comando sem nenhum pacote ou pode especificar um ou mais pacotes (por exemplo, npm ) para instalá-los ao mesmo tempo.