feat: Add Nix flake stub

configuration.nix

@@ -0,0 +1,19 @@
+{ config, pkgs, ... }:
+{
+  # List packages installed in system profile. To search by name, run:
+  # $ nix-env -qaP | grep wget
+  environment.systemPackages = [
+    pkgs.vim
+  ];
+
+  # Auto upgrade nix package and the daemon service.
+  services.nix-daemon.enable = true;
+  nix.package = pkgs.nix;
+
+  # Enable alternative shell support in nix-darwin.
+  programs.fish.enable = true;
+
+  # Used for backwards compatibility, please read the changelog before changing.
+  # $ darwin-rebuild changelog
+  system.stateVersion = 5;
+}

flake.lock

@@ -0,0 +1,48 @@
+{
+  "nodes": {
+    "nix-darwin": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs-darwin"
+        ]
+      },
+      "locked": {
+        "lastModified": 1731642829,
+        "narHash": "sha256-vG+O2RZRzYZ8BUMNNJ+BLSj6PUoGW7taDQbp6QNJ3Xo=",
+        "owner": "LnL7",
+        "repo": "nix-darwin",
+        "rev": "f86f158efd4bab8dce3e207e4621f1df3a760b7a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "LnL7",
+        "repo": "nix-darwin",
+        "type": "github"
+      }
+    },
+    "nixpkgs-darwin": {
+      "locked": {
+        "lastModified": 1730891215,
+        "narHash": "sha256-i85DPrhDuvzgvIWCpJlbfM2UFtNYbapo20MtQXsvay4=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "c128e44a249d6180740d0a979b6480d5b795c013",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-24.05-darwin",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nix-darwin": "nix-darwin",
+        "nixpkgs-darwin": "nixpkgs-darwin"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,17 @@
+{
+  description = "Leni Aniva's Systems";
+
+  inputs = {
+    nixpkgs-darwin.url = "github:NixOS/nixpkgs/nixpkgs-24.05-darwin";
+    nix-darwin = {
+      url = "github:LnL7/nix-darwin";
+      inputs.nixpkgs.follows = "nixpkgs-darwin";
+    };
+  };
+
+  outputs = inputs@{ self, nixpkgs-darwin, nix-darwin }: {
+    darwinConfigurations."sphalerite" = nix-darwin.lib.darwinSystem {
+      modules = [ ./configuration.nix ];
+    };
+  };
+}