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This post has a great overview: https://grahamc.com/blog/nix-and-layered-docker-images/ https://grahamc.com/blog/nix-and-layered-docker-images/ tl;dr it will p

This post has a great overview: https://grahamc.com/blog/nix-and-layered-docker-images/ https://grahamc.com/blog/nix-and-layered-docker-images/ tl;dr it will put one package per layer as much as possible, and compress everything else into the final layer. It uses the dependency graph to implement a reasonable heuristic for what is fine grained and what get combined.

ghthor 7mo ago
That layering algorithm is also configurable, though I couldn’t really understand how to configure it and just wrote my own post processing to optimize layering for my internal use case. I believe I can open source this w/o much work. The layer layout is just a json file so it can be post processed w/o issue before passing to the nix docker builders