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Oct 20, 2025
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Replace nixpkgs tarball with git shallow clone #58

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16 changes: 7 additions & 9 deletions src/tutorials/installation/Networking.md
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Expand Up @@ -35,19 +35,17 @@ nix shell nixpkgs#cowsay --option substituters "https://mirrors.tuna.tsinghua.ed
## 2. 使用国内镜像地址加速 Flakes Inputs 的下载

如果你想使用 Flakes，但访问 GitHub 速度太慢，你可以使用国内的镜像地址来加速。

但需要注意的是，这种方式下无法锁定 nixpkgs 版本，也就失去了 Flakes 锁定依赖版本
的优势。

示例如下，主要是将 `nixpkgs.url` 替换成国内镜像源的 `nixexprs.tar.xz` 文件的路
径：
需要注意的是，如果将 `nixpkgs.url` 替换成 `nixexprs.tar.xz` 文件，
则无法锁定 nixpkgs 版本，也就失去了 Flakes 锁定依赖版本的优势。
因此，建议选择 Git 浅克隆的方式拉取 nixpkgs 镜像：

```nix
{
inputs = {
# nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.11";
nixpkgs.url = "https://mirrors.ustc.edu.cn/nix-channels/nixos-23.11/nixexprs.tar.xz";
# nixpkgs.url = "https://mirrors.tuna.tsinghua.edu.cn/nix-channels/nixpkgs-23.11/nixexprs.tar.xz";
# nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05";
nixpkgs.url = "git+https://mirrors.nju.edu.cn/git/nixpkgs.git?ref=nixos-25.05&shallow=1";
# nixpkgs.url = "git+https://mirrors.tuna.tsinghua.edu.cn/git/nixpkgs.git?ref=nixos-25.05&shallow=1";
# nixpkgs.url = "https://mirrors.ustc.edu.cn/nix-channels/nixos-25.05/nixexprs.tar.xz";
};
outputs = inputs@{ self, nixpkgs, ... }: {
nixosConfigurations.my-nixos = nixpkgs.lib.nixosSystem {
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