Instalando devdeps com npm

Isso é algo que me queimou hoje. (Usando o nó 0.10.24, npm 1.3.14)

//does NOT install devdependencies
$ NODE_ENV=production npm install

//does NOT install devdependencies
$ NODE_ENV=development npm install --production

//DOES install devdeps
$ NODE_ENV=development npm install

https://npmjs.org/doc/misc/npm-config.html#production