{ config, pkgs, pkgs-unstable, lib, ... }: {
  boot = {
    kernelPackages = lib.mkDefault pkgs.linuxPackages_latest;
    kernel.sysctl = {
      "net.ipv4.ip_unprivileged_port_start" = 0;
    };
  };
  system.stateVersion = "24.05";
  system.autoUpgrade = {
    enable = true;
    persistent = true;
    flake = "/home/alisceon/.nixos_config#${config.networking.hostName}";
    flags = [
      "--update-input"
      "nixpkgs"
    ];
    dates = "daily";
  }; # end system.autoUpgrade

  nix = {
    settings = {
      experimental-features = [ "nix-command" "flakes" ];
      auto-optimise-store = true;
      trusted-users = [ "root" "alisceon" ];
    }; # end settings
    gc = {
      automatic = true;
      persistent = true;
      dates = "daily";
      options = "--delete-older-than 7d";
    }; # end gc
    registry = {
      templates.to = {
        type = "git";
        url = "git+ssh://git@git.malice.zone/alisceon/devenv_templates.git";
      }; # end templates.to
      nixpkgs.to = {
        type = "github";
        owner = "NixOS";
        repo = "nixpkgs";
        ref = "nixos-unstable";
      }; # end nixpkgs.to
      nixpkgs-stable.to = {
        type = "github";
        owner = "NixOS";
        repo = "nixpkgs";
        ref = "nixos-25.05";
      }; # end nixpkgs.to
    }; #end registry
  }; #end nix

  console.keyMap = "sv-latin1";
  networking.networkmanager.enable = true;
  time.timeZone = "Europe/Stockholm";
  i18n.defaultLocale = "en_US.UTF-8";
  i18n.extraLocaleSettings = {
    LC_ADDRESS = "sv_SE.UTF-8";
    LC_IDENTIFICATION = "sv_SE.UTF-8";
    LC_MEASUREMENT = "sv_SE.UTF-8";
    LC_MONETARY = "sv_SE.UTF-8";
    LC_NAME = "sv_SE.UTF-8";
    LC_NUMERIC = "sv_SE.UTF-8";
    LC_PAPER = "sv_SE.UTF-8";
    LC_TELEPHONE = "sv_SE.UTF-8";
    LC_TIME = "sv_SE.UTF-8";
  };

  environment = {
    systemPackages = with pkgs; [
      # CLI tools
      git
      wget
      curl
      btop # system monitor
      ripgrep # grep replacement
      fd # find replacement
      eza # ls replacement
      nh # nix helper
      jq # JSON processor
      ncdu
      pciutils
      usbutils
      tree
      fzf # fuzzy finder
      cowsay # important
      psmisc
      pv
      file

      # Shells
      bash
      nushell
      fish
      powershell
      
      # Languages
      python3
      python3Packages.python-lsp-server

      # Virtualization
      podman  
    ]; # end systemPackages

    shells = with pkgs; [ 
      bash
      nushell
      fish
      powershell
      xonsh
    ];
  }; # end environment

  virtualisation = {
    containers.enable = true;
    podman = {
      enable = true;
      dockerCompat = lib.mkDefault true;
      defaultNetwork.settings.dns_enabled = true;
    }; # end podman
    oci-containers.backend = "podman";
  }; # end virtualisation

  users.users.alisceon = {
    isNormalUser = true;
    extraGroups = [ "wheel" "networkmanager" "podman" ];
    shell = pkgs.xonsh;
    openssh.authorizedKeys.keys = [
      "ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBPN1Cd2UlHo03Jqgi5Yb4io/3gh/X4wCb8LcmKlpAovQa271CKDBtYOUKn+Fts03g6dBMfaWMty6VGPMGDMONmc= alisceon@electra"
      "ssh-rsa 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 user@hannah.afk"
    ];
  }; # end users

  programs = {
    command-not-found.enable = true;
    fzf.fuzzyCompletion = true;
    xonsh = {
      enable = true;
      extraPackages = ps: with ps; [
        pyperclip
        xonsh.xontribs.xonsh-direnv
        pkgs.nur.repos.xonsh-xontribs.xontrib-fish-completer
        pkgs.nur.repos.xonsh-xontribs.xontrib-abbrevs
        pkgs.nur.repos.xonsh-xontribs.xontrib-clp
        pkgs.nur.repos.xonsh-xontribs.xontrib-bashisms
        ( 
          ps.buildPythonPackage 
          rec { 
            name = "xontrib-fzf-completions"; 
            version = "v0.0.2"; 
            format = "pyproject"; 
            nativeBuildInputs = [ ps.setuptools ps.setuptools-scm ps.wheel ];
            propagatedBuildInputs = [ ps.xonsh ]; 
            src = pkgs.fetchFromGitHub { 
              owner = "doronz88"; 
              repo = "${name}"; 
              rev = "${version}"; 
              sha256 = "sha256-1z5xHX4Psevn8686QkwIzv/LOJ5IMJc2nQ5Hg/2svTc="; 
            }; 
            meta = { 
              homepage = "https://github.com/doronz88/xontrib-fzf-completions"; 
              description = "fuzzy completions for xonsh"; 
              license = pkgs.lib.licenses.mit; 
              maintainers = [ ]; 
            }; # end meta
          } # end buildPythonPackage
        ) 
      ]; # end extraPackages
      config = (builtins.readFile ../../home/conf/xonsh/xonshrc);
    }; # end xonsh
  }; # end programs
} #end file