You can open the .zip and replace the keys or clockworkmod which cyanogenmod uses allows it to copy from recovery by ignoring the fact keys are different from p

You can open the .zip and replace the keys or clockworkmod which cyanogenmod uses allows it to copy from recovery by ignoring the fact keys are different from platform. I guess since they just provide binaries and not source, and google makes money when you use their apps and provide them data they don't care that other projects have GAPPs for dl