split nix and system

Flake lock file updates:

• Updated input 'my-nixpkgs':
    'github:qaristote/my-nixpkgs/65eb03f15116223871d06254dc453abc79bcffaa' (2025-03-18)
  → 'github:qaristote/my-nixpkgs/14fb28f55fa552aaeffb987e4078e16691bde5b0' (2025-03-22)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/da044451c6a70518db5b730fe277b70f494188f1' (2025-03-18)
  → 'github:NixOS/nixpkgs/7105ae3957700a9646cc4b766f5815b23ed0c682' (2025-03-20)

1 files changed, 13 insertions, 0 deletions

diff --git a/config/system.nix b/config/system.nix
new file mode 100644
index 0000000..847a046
--- /dev/null
+++ b/config/system.nix
@@ -0,0 +1,13 @@
+{...}: {
+  personal.system = {
+    flake = "git+file:///etc/nixos/";
+    autoUpgrade = {
+      enable = true;
+      remoteBuilding = {
+        enable = true;
+        builder.domain = "aristote.mesh";
+      };
+    };
+  };
+  system.autoUpgrade.allowReboot = true;
+}