build(nixos): add flake.nix

configuration.nix

@@ -2,7 +2,7 @@
 # your system.  Help is available in the configuration.nix(5) man page
 # and in the NixOS manual (accessible by running ‘nixos-help’).
 
-{ config, pkgs, ... }:
+{ config, pkgs, inputs, ... }:
 
 {
   imports =

flake.nix

@@ -0,0 +1,16 @@
+{
+  description = "simple NixOS flake";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+  };
+
+  outputs = inputs@{ self, nixpkgs, ... }: {
+    nixosConfigurations.nemesis = nixpkgs.lib.nixosSystem {
+      specialArgs = { inherit inputs; };
+      modules = [
+        ./configuration.nix
+      ];
+    };
+  };
+}