playbook base initial skeleton

modules/core.nix

@@ -0,0 +1,95 @@
+{pkgs, ...}: {
+  imports = [
+    ./hardware-configuration.nix
+  ];
+
+  # Enable flakes and nix commands
+  nix = {
+    settings = {
+      experimental-features = ["nix-command" "flakes"];
+      # Enable automatic garbage collection
+      auto-optimise-store = true;
+    };
+    # Automatic cleanup of old generations
+    gc = {
+      automatic = true;
+      dates = "weekly";
+      options = "--delete-older-than 30d";
+    };
+  };
+
+  # Boot configuration
+  boot.loader.grub = {
+    enable = true;
+    efiSupport = true;
+    efiInstallAsRemovable = true;
+  };
+
+  # Your base configuration here
+  system.autoUpgrade = {
+    enable = true;
+    allowReboot = true;
+    dates = "04:00";
+    flake = "path:/etc/nixos/current";
+    randomizedDelaySec = "45min";
+    flags = [
+      "--update-input nixpkgs"
+      "--update-input base-config"
+    ];
+  };
+
+  # Other base configurations...
+  services.openssh = {
+    enable = true;
+    settings = {
+      PermitRootLogin = "no";
+      PasswordAuthentication = false;
+      MaxAuthTries = 3;
+      LoginGraceTime = "30s";
+    };
+    ports = [2222];
+  };
+
+  # System packages
+  environment.systemPackages = with pkgs; [
+    # Docker tools
+    docker
+    docker-compose
+    # System utilities
+    neovim
+    git
+    unstable.gum
+    just
+    jq
+    (pkgs.writeShellScriptBin "shp" ''
+      exec sudo ${pkgs.just}/bin/just -f /etc/self-host-playbook/justfile "$@"
+    '')
+  ];
+
+  # Enable Docker with recommended settings
+  virtualisation = {
+    docker = {
+      enable = true;
+      # Enable docker daemon to start on boot
+      enableOnBoot = true;
+      # Use overlay2 storage driver
+      storageDriver = "overlay2";
+      # Enable live restore
+      liveRestore = true;
+    };
+    oci-containers = {
+      backend = "docker";
+    };
+  };
+
+  environment.etc = {
+    # Main justfile
+    "self-host-playbook/justfile".source = ../justfiles/main.just;
+
+    # Tier justfiles
+    "self-host-playbook/tiers/core.just".source = ../justfiles/tiers/core.just;
+    "self-host-playbook/tiers/starter.just".source = ../justfiles/tiers/starter.just;
+  };
+  # System state version (do not change)
+  system.stateVersion = "24.11";
+}