nixos-config/configuration.nix

# Edit this configuration file to define what should be installed on
# your system.  Help is available in the configuration.nix(5) man page
# and in the NixOS manual (accessible by running ‘nixos-help’).

{ config, pkgs, ... }:
  let
    unstable = import <nixos-unstable> {};
    sshPubkeys = [
      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIE+X4vceRi79FLwwyzFzxNvaQlolQFrpYn0N4bgdLLaI root@hardlyworking"
      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFyGaBZIZYjiBhOFD2drvG316B9NUVSbMpTIhOCQur8P arch"
      ];
    mc1 = "192.168.0.167";
    common_mc1_route = { 
      via = mc1;
      prefixLength = 24;
    };
  in 
  { 
    users.users = {
      root.openssh.authorizedKeys.keys = sshPubkeys;
      mc-fucker = {
        isNormalUser = true;
        openssh.authorizedKeys.keys = sshPubkeys;
        hashedPassword = "$6$VlNqS5D2uxmzs$AXEEg63iQ5bMQDtU9.Cy4cd/UfQCHk9QNo2RuQmucNz6Y4Z2l0qM5lvr6KFcEdJi6vO7mYd761LrVrQ8J7nPw1"; 
        extraGroups = [ "wheel" ];
      };
    };

  nixpkgs.overlays = [
    (self: super: {
      gitea = unstable.gitea;
    })
  ];

  imports =
    [ # Include the results of the hardware scan.
      ./hardware-configuration.nix
    ];

  boot.loader.grub.enable = true;
  boot.loader.grub.version = 2;
  boot.loader.grub.device = "/dev/sda"; # or "nodev" for efi only

  # networking.hostName = "nixos"; # Define your hostname.
  time.timeZone = "Europe/Berlin";

  networking.useDHCP = false;

  i18n.defaultLocale = "en_GB.UTF-8";

  # List packages installed in system profile. To search, run:
  # $ nix search wget
  environment.systemPackages = with pkgs; [
    vim # Do not forget to add an editor to edit configuration.nix! The Nano editor is also installed by default.
    wget
    htop
    git
  ];

  # Some programs need SUID wrappers, can be configured further or are
  # started in user sessions.
  # programs.mtr.enable = true;
  # programs.gnupg.agent = {
  #   enable = true;
  #   enableSSHSupport = true;
  # };

  # Open ports in the firewall.
  # networking.firewall.allowedTCPPorts = [ ... ];
  networking.firewall.allowedTCPPorts = [ 3000 2222 ];
  # networking.firewall.allowedUDPPorts = [ ... ];
  # Or disable the firewall altogether.
  # networking.firewall.enable = false;

  # This value determines the NixOS release from which the default
  # settings for stateful data, like file locations and database versions
  # on your system were taken. It‘s perfectly fine and recommended to leave
  # this value at the release version of the first install of this system.
  # Before changing this value read the documentation for this option
  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
  system.stateVersion = "21.05"; # Did you read the comment?

  networking = {
    nameservers = [ mc1 ];
    defaultGateway = "192.168.0.1";
    interfaces.ens192.ipv4 = {
      addresses = [ {
        address = "192.168.0.165";
        prefixLength = 24;
      } ];
      routes = [ 
          (common_mc1_route // { address = "192.168.1.0"; })
          (common_mc1_route // { address = "192.168.2.0"; })
          (common_mc1_route // { address = "192.168.3.0"; })
      ];
    };
  };

  zramSwap = {
    enable = true;
    #memoryMax = 8000000000;
    memoryPercent = 500;
    algorithm = "lzo-rle";
  };

  programs.zsh = {
    enable = true;
    interactiveShellInit = ''
      source ${pkgs.grml-zsh-config}/etc/zsh/zshrc
      # Make user colour green in prompt instead of default blue
      #zstyle ':prompt:grml:left:items:user' pre '%F{green}%B'
      export QUOTING_STYLE=literal
    '';
    promptInit = ""; # otherwise it'll override the grml prompt
    syntaxHighlighting.enable = true;
    autosuggestions = {
      enable = true;
      highlightStyle = "fg=cyan";
    };
    shellAliases = {
      "ip" = "ip -c";
      "nt" = "nixos-rebuild test";
      "ns" = "nixos-rebuild switch";
      "nsu" = "nixos-rebuild switch --upgrade";
    };
  };

  users.defaultUserShell = pkgs.zsh;

  security.sudo.wheelNeedsPassword = false;
  
  services = {
    openssh.enable = true;

    zabbixAgent = {
      enable = true;
      openFirewall = true;
      server = mc1;
    };

    gitea = {
      enable = true;
      domain = "dev.mc-fucker.cool";
      rootUrl = "https://dev.mc-fucker.cool";
      log.level = "Info";
      database = {
        createDatabase = false;
        host = "192.168.2.5";
        type = "postgres";
        port = 5432;
        name = "giteadb";
        passwordFile = /run/keys/gitea-dbpassword;
      };
      settings = {
        service = {
          REGISTER_MANUAL_CONFIRM = true;
        };
        server = {
          START_SSH_SERVER = true;
          SSH_SERVER_HOST_KEYS = "ssh/gitea.ed25519";
          #SSH_SERVER_KEY_EXCHANGES = "curve25519-sha256@libssh.org";
        #  SSH_PORT = 2222;
        #  SSH_LISTEN_PORT = 2222;
        };
      };
      ssh.clonePort = 2222;
    };
  };
}

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