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Author: sharpchen

docs/document/Skill/Nix/docs/1.Language/Modules.md

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+# Modules
+
+Generally any nix file is a module, contains either a function or a attribute set.
+
+## Module Identifier
+
+- relative path to a nix file
+- keys in `NIX_PATH`: any key in `NIX_PATH` is a valid identifier of nix module.
+```sh
+$ echo $NIX_PATH
+
+nixpkgs=/nix/var/nix/profiles/per-user/root/channels/nixos:nixos-config=/etc/nixos/configuration.nix:/nix/var/nix/profiles/per-user/root/channels
+```
+
+```nix
+{
+    import = [
+        <nixpkgs> # [!code highlight]
+    ];
+}
+
+# or
+
+let
+    pkgs = import <nixpkgs>; # [!code highlight]
+in {
+
+}
+```