npm install jison
Tinkering with new projects should be easy. You should be able to click a link or invoke a command and BAM, there goes your Sunday afternoon. I’m not sure how many people build parsers on the weekend, but hey, Jison is easy to install now anyway.
If you’re using Node.js you should already have the excellent npm installed. If not, that’s easy:
curl -L http://github.com/isaacs/npm/tarball/master | tar xz --strip 1
cd npm
sudo make
Now install jison:
sudo npm install jison
Crazy easy. Now go read the docs for challenges.