chore: convert system to use a flake

flake.lock

@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1724242322,
+        "narHash": "sha256-HMpK7hNjhEk4z5SFg5UtxEio9OWFocHdaQzCfW1pE7w=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "224042e9a3039291f22f4f2ded12af95a616cca0",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-24.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,14 @@
+{
+  description = "quasar system configuration";
+
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.05";
+
+  outputs = { self, nixpkgs, ... }: {
+    nixosConfigurations.quasar = nixpkgs.lib.nixosSystem {
+      system = "x86_64-linux";
+      modules = [
+        ./configuration.nix
+      ];
+    };
+  };
+}