Proposed solution for Firmware retraction fallback

[yfernandes]

klipper-config/macros/nozzle_prime.cfg

Line 11 in 35f9022

# TODO: figure out how to recover if firmware retraction isn't defined

If the user is using superslicer an option is to use a GCode placeholder for retraction length, this would require that the start GCode script in the slice be modified and all its references. The same approach can be used for layer height, which is a required change, although not obvious when changing nozzle diameter.

SuperSlicer Placeholder reference
Just search for "retract_length"

If interested I could open a PR and send it your way!

[dudeofawesome]

Yeah, I'd love to see a PR for this.