J'ai essayé d'installer nodejs et npm sur Ubuntu 12.04. J'ai googlé et l'ai fait. Maintenant, je ne pouvais pas installer NPM sur la machine.
sudo apt-get install npm
Ce qui me donne ça
The following packages have unmet dependencies:
npm : Depends: nodejs but it is not going to be installed
Depends: nodejs-dev
Depends: node-request but it is not going to be installed
Depends: node-mkdirp but it is not going to be installed
Depends: node-minimatch but it is not going to be installed
Depends: node-semver but it is not going to be installed
Depends: node-ini but it is not going to be installed
Depends: node-graceful-fs but it is not going to be installed
Depends: node-abbrev but it is not going to be installed
Depends: node-nopt but it is not going to be installed
Depends: node-fstream but it is not going to be installed
Depends: node-rimraf but it is not going to be installed
Depends: node-tar but it is not going to be installed
Depends: node-which but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
apt-get install npm
doit être éviter (!). Vérifiez sinpm -v
est là avant d'essayer d'installer .... (lire la suite ci-dessous à la réponse de @ MarcoCerpi)