thread:
https://mods.factorio.com/mod/Krastorio2/discussion/605e27a2405aff365a02ff91
hey,I just happend to found that your k2 science icon is mostly stacking existed icon,
and I just came up with a idea and got approval,
you may do it by stacking existed k2 icon now(but still cannot just use these edited pic tho,you have to stacking icons)
meifray
6 days ago
Edit
is it fine if we only use string reference the icon image?
I don`t really fully understand how GPLv3 work...,
but if we can do so,then we might be able use "icons" to stack mutiple icon with different offset,
therfore,kind of bypass the License.(by only editing the prototype,without actually editing or redistribute the image or any code section your mod current has)
raiguard
20 hours ago
If you're not using actual code or other assets from K2, you're fine. This includes if your mod depends on K2 and uses its graphics files by sourcing them from K2 itself. That is perfectly acceptable under whatever license you want.