Hi everyone, I’ve given Blender 2.8 a go and made some procedural pine bark using the new voronoi texture node 
Here is an Eevee render of the result:
Currently the biggest issue is coloring the output with a color ramp accurately. The current workflow is adjusting the thickness of the bark and the indentation before attempting to place color ramp markers.
Shader is Licensed under CC0 so use however you like!
Free Download: https://gum.co/LYBtgK