kaffa/obsidian

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kappa 370c7da4a9 dev: NixOS 25.11 매뉴얼 로컬 사본 추가

nixpkgs nixos-25.11 브랜치의 nixos/doc/manual/ 디렉토리를 sparse clone으로
가져와 ~/obsidian/dev/nixos-manual/에 복사. _index.md에 구조/갱신 방법 정리.

오프라인 참조 + AI 에이전트 컨텍스트용. sandbox-tokyo 같은 NixOS 노드 운영 시
빠른 참조로 사용.

2026-04-08 16:15:46 +09:00

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NixOS

`/nix`

NixOS needs the entirety of /nix to be persistent, as it includes:

/nix/store, which contains all the system's executables, libraries, and supporting data;
/nix/var/nix, which contains:
- the Nix daemon's database;
- roots whose transitive closure is preserved when garbage-collecting the Nix store;
- system-wide and per-user profiles.

`/boot`

/boot should also be persistent, as it contains:

the kernel and initrd which the bootloader loads,
the bootloader's configuration, including the kernel's command-line which determines the store path to use as system environment.

Users and groups

/var/lib/nixos should persist: it holds state needed to generate stable uids and gids for declaratively-managed users and groups, etc.
users.mutableUsers should be false, or the following files under /etc should all persist:
- {manpage}passwd(5) and {manpage}group(5),
- {manpage}shadow(5) and {manpage}gshadow(5),
- {manpage}subuid(5) and {manpage}subgid(5).