xiaoyang111222 / cn-math-taxonomy

数学（小学到高中）、英语（三年级到高中）、初中物理的知识图谱：1644 个知识点、2403 条先修边、6723 道题，对齐课标，附自适应前置诊断。

withmarbleapp / os-taxonomy

An open, structured graph of 1,616 primary-school micro-topics with prerequisite dependencies and curriculum standards alignment.

NixOS / nix.dev

Official documentation for getting things done with Nix.