This is definitely interesting.
Packal itself could do with a bit of TLC as there do seem to be a lot of errors, typically when trying to search for something. I actually contacted the original author a while back and asked if he'd be interested in me helping him rebuild it as I had a lot of ideas, and well, that's what I do for a living.
I actually started working on my own alternative take on it, though I now see that someone else has attempted it. The difference with the work that I was doing was that I was building it to be an actual package manager, so rather than just listing the workflows it could hook up to your GitHub repository and keep up to date, as well as providing a workflow to install from within Alfred. It's something that I'd like to launch at some point, which is my primary reason for being here really.
That being said, I'm curious how people are finding this new one? I've had a play with it and it seems mostly basic (I'm not a fan of the design).
As a sort of side note, I'd be grateful if someone could point me in the direction of the correct section of the forum where I could make my own post about my proposed alternative, and see if people would still be interested.