Thanks for the tips! I was able to load the little-spark system with your description. However, I'm getting this. Any guess if dependency might be missing?
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Well, I guess both commits are good.
Another dependency might be https://github.com/Shirakumo/glsl-toolkit
And remember to try recompiling the trial/glsl-toolkit/3d-spaces in case it doesn't work the first time:
(asdf:load-system :3d-spaces :force T) (asdf:load-system :glsl-toolkit :force T) (asdf:load-system :trial :force T)