[cliffy]

I've been in this situation in that our team had a stated goal, but it became obvious our manager was doing jack shit to enable us to accomplish the goal, and no one gave a fuck if I or the team was doing anything. In fact, the organization we found ourselves in seemed to be actively opposed to what we were trying to achieve. It's extremely toxic to your mental health and detrimental to your career long-term if you stay put.

I treated it as a paid job-search opportunity and put in my two weeks as soon as I got a good offer.

If you don't have that option, try to find anything you can build that would improve the lives of your coworkers and get them to use it. Put it on your resume and start looking.