There is a new (super-modern) package manager in Haiku, along with automated builds based on recipes, dependency managing, and a timeline working toward the next release that has been a long time coming.
I don't know what drivers problem you're talking about, but the only drivers I've had a problem with are the ones for Oracle VirtualBox (and the last time I tried, even the semi-driverless support was pretty tolerable.)
I believe it was a previous GSoC contributor who worked on adding VirtualBox support, but their contract ended, VBox failed to incorporate the changes into their tree, and support started to lapse.
From reading of the blog archive history, it sounded like the support was basically done, but the VBox APIs were the moving target and nobody at VirtualBox team was interested in adding support for another platform to their product's CV.
If you were there on that perfect day, you had basic 3D driver support, responsive virtual display resizing, and even virtual input drivers that did not need mouse pointer to be captured.