Add initial config

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

configuration.nix

@@ -0,0 +1,64 @@
+{ lib, pkgs, ... }:
+
+{
+  imports = [
+    ./configs/zsh.nix
+    ./configs/neovim.nix
+    ./configs/tmux.nix
+  ];
+
+  fileSystems."/persist".neededForBoot = true;
+
+  boot = {
+    loader = {
+      systemd-boot.enable = true;
+      timeout = 0;
+      efi.canTouchEfiVariables = true;
+    };
+
+    initrd = {
+      verbose = false;
+      postDeviceCommands = lib.mkAfter (builtins.readFile ./scripts/impermanence.sh);
+    };
+
+    kernelParams = [ "loglevel=3" "quiet" ];
+    consoleLogLevel = 0;
+  };
+
+  environment = {
+    persistence."/persist" = {
+      hideMounts = true;
+      directories = [
+        "/etc/nixos"
+        "/etc/NetworkManager/system-connections"
+        "/var/lib/nixos"
+        "/var/log"
+        "/var/lib/systemd/coredump"
+      ];
+      files = [
+        "/etc/machine-id"
+        "/root/.zsh_history"
+      ];
+    };
+
+    systemPackages = with pkgs; [
+      nano
+      tree
+      git
+      ranger
+      btop
+      fastfetch
+    ];
+  };
+
+  networking.networkmanager.enable = true;
+  i18n.defaultLocale = "en_US.UTF-8";
+  users.defaultUserShell = pkgs.zsh;
+
+  security.sudo.extraConfig = ''
+    Defaults lecture = never
+  '';
+
+  nix.settings.experimental-features = [ "nix-command" "flakes" ];
+  system.stateVersion = "24.05";
+}