を試したところ、npm WARN ... 'heroku-cli' has been renamed 'heroku' と表示されたもののインストールはできた様子。
それと、cross-spawn no longer requires a build toolchain, use it instead という警告もあり。
In software we do our practicing on the job, and that’s why we make mistakes on the job. We need to find ways of splitting the practice from the profession. We need practice sessions.
As a group, software developers don’t practice enough. Most of our learning takes place on the job, which means that most of our mistakes get made there as well. Other creative professions practice: artists carry a sketchpad, musicians play technical pieces, poets constantly rewrite works. In karate, where the aim is to learn to spar or fight, most of a student’s time is spent learning and refining basic moves. The more formal of these exercises are called kata.
Warning: If you are not familiar with Chef and Vagrant already, I recommend starting with the shell provisioner. However, if you are comfortable with Vagrant already, Vagrant is the best way to learn Chef.