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feat: add note about 'git add'

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Ryan Yin 2024-01-11 11:06:59 +08:00
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docs/nixos-with-flakes/other-useful-tips.md
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NixOS configuration, being a set of text files, is well-suited for version control with Git. This allows easy rollback to a previous version in case of issues. NixOS configuration, being a set of text files, is well-suited for version control with Git. This allows easy rollback to a previous version in case of issues.
> NOTE: When using Git, Nix ignores all files that are not tracked by Git. If you encounter an error in Nix stating that a particular file is not found, it may be because you haven't `git add`ed it.
By default, NixOS places the configuration in `/etc/nixos`, which requires root permissions for modification, making it inconvenient for daily use. Thankfully, Flakes can help solve this problem by allowing you to place your flake anywhere you prefer. By default, NixOS places the configuration in `/etc/nixos`, which requires root permissions for modification, making it inconvenient for daily use. Thankfully, Flakes can help solve this problem by allowing you to place your flake anywhere you prefer.
For example, you can place your flake in `~/nixos-config` and create a symbolic link in `/etc/nixos` as follows: For example, you can place your flake in `~/nixos-config` and create a symbolic link in `/etc/nixos` as follows:

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docs/zh/nixos-with-flakes/other-useful-tips.md
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NixOS 的配置文件是纯文本，因此跟普通的 dotfiles 一样可以使用 Git 管理，这样可以方便的回滚到历史版本，或者在多台机器上同步配置。 NixOS 的配置文件是纯文本，因此跟普通的 dotfiles 一样可以使用 Git 管理，这样可以方便的回滚到历史版本，或者在多台机器上同步配置。
> 注意：使用 Git 后，所有未被 Git 跟踪的文件都会被 Nix 忽略，如果发现 Nix 报错说某某文件 not found，或许是因为你没 `git add` 它
另外一点是，Nix Flakes 配置也不一定需要放在 `/etc/nixos` 目录下，可以放在任意目录下，只要在部署时指定正确的路径即可。 另外一点是，Nix Flakes 配置也不一定需要放在 `/etc/nixos` 目录下，可以放在任意目录下，只要在部署时指定正确的路径即可。
> 我们在前面第 3 小节的代码注释中有说明过，可以通过 `sudo nixos-rebuild switch --flake .#xxx` 的 `--flake` 参数指定 Flakes 配置的文件夹路径，并通过 `#` 后面的值来指定使用的 outputs 名称。 > 我们在前面第 3 小节的代码注释中有说明过，可以通过 `sudo nixos-rebuild switch --flake .#xxx` 的 `--flake` 参数指定 Flakes 配置的文件夹路径，并通过 `#` 后面的值来指定使用的 outputs 名称。