configuration.nix

{ config, pkgs, ... }:

{
  imports = [ <nixpkgs/nixos/modules/installer/virtualbox-demo.nix> ];
  boot.supportedFilesystems = ["zfs"];
  boot.zfs.forceImportRoot = false;
  networking.hostId = "7bfb60f7";
  users.defaultUserShell = pkgs.bash;
  environment.variables = {
    VDEV_MAX = "7";
};
  environment.sessionVariables = {
    VDEV_MAX = "7";
};
  environment.etc = {
    bootstrap = {
    text = "VDEV_MAX=12";
    mode = "666";
};
};
  fileSystems = {
    "/apps" = {
      device = "galaxy-${config.networking.hostName}/apps";
      fsType = "zfs";
    };

    "/files" = {
      device = "galaxy-${config.networking.hostName}/files";
      fsType = "zfs";
    };

    "/media" = {
      device = "galaxy-${config.networking.hostName}/media";
      fsType = "zfs";
    };

   "/nix-system" = {
      device = "galaxy-${config.networking.hostName}/nix";
      fsType = "zfs";
    };
    "/frontier" = {
      device = "galaxy-${config.networking.hostName}/frontier";
      fsType = "zfs";
    };
    "/wilds" = {
      device = "galaxy-${config.networking.hostName}/wilds";
      fsType = "zfs";
    };
  };

    services.sanoid = 
    let
        zfs_datasets = [
      "galaxy-nixos/apps"
      "galaxy-nixos/files"
      "galaxy-nixos/media"
      "galaxy-nixos/nix"
      "galaxy-nixos/frontier"
      "galaxy-nixos/wilds"

    ];
      remoteHost = "fm2096.rsync.net";
      remoteUser = "fm2096";
    in {
      enable = true;
      templates.backup = {
          hourly = 36;
          daily = 30;
          monthly = 3;
          autoprune = true;
          autosnap = true;
      };
      datasets = builtins.listToAttrs (map 
        (dataset: 
          { name = dataset; value = {
            useTemplate = [ "backup" ];
      };
      }) zfs_datasets);
    };
    services.syncoid =
    let
      zfs_datasets = [
      "galaxy-nixos/apps"
      "galaxy-nixos/files"
      "galaxy-nixos/nix"
      "galaxy-nixos/frontier"
      "galaxy-nixos/wilds"
    ];
      remoteHost = "fm2096.rsync.net";
      remoteUser = "fm2096";
    in
    { 
      enable = true;
      sshKey = "/home/root/.ssh/backup";
      localSourceAllow = [
        "bookmark" "hold" "send" "snapshot" "mount" "destroy"
        "compression" "recordsize"
      ];
      localTargetAllow = [
        "change-key" "compression" "create" "mount" "mountpoint"
        "receive" "rollback" "destroy" "recordsize"
      ]; 
      commands = builtins.listToAttrs (map 
        (dataset: 
          { 
          name = dataset; 
          value = {
            source = "${dataset}";
            target = "${remoteUser}@${remoteHost}:${dataset}";
            recursive = true;
          }; 
          }
        ) zfs_datasets);
    };

    systemd.services.set-fs-ownership = {
    description = "Set ownership of file systems";
    after = [ "local-fs.target" ];
    wantedBy = [ "multi-user.target" ];
    serviceConfig = {
      ExecStart = (
      let
        fs_map = [
            {
            path = "/apps";
            group = "apps";
            }
            {
            path = "/media";
            group = "media";
            }
            {
            path = "/frontier";
            group = "frontier";
            }
            {
            path = "/wilds";
            group = "wilds";
            }
        ];
        chownCommands = builtins.concatStringsSep " && " (map (fs: "chown -R ranka:${fs.group} ${fs.path}") fs_map);
      in
      ''/bin/sh -c "${chownCommands}"''
      );
      Type = "oneshot";
      RemainAfterExit = true;
    };
  };
  nix.settings.experimental-features = [ "nix-command" "flakes" ];
    environment.systemPackages = with pkgs; [ (python3.withPackages(ps: with ps; [
    numpy
    setuptools
    wheel
    pip
##    (buildPythonPackage rec {
##      pname = "diskinfo";
##      version = "3.1.2";
##      src = fetchPypi {
##        inherit pname version;
##          sha256 = "3f60a6f7b72dbf079c7f828540d38078e977aa5f578aa80a6e50b5860ffeaaa1";
##    };
##    doCheck = false;
##  })
  ]))
    git
    vim
    talosctl
    openssh
    inetutils
#    buildEnv {
#      name = "bootstrap-env";
#      paths = [ (pkgs.writeTextFile {
#        name = "bootstrap.txt";
#        text = "VDEV_MAX=7";
#        destination = "/etc/bootstrap/vars.txt";
#})];
#}
];





  # Let demo build as a trusted user.
 nix.settings.trusted-users = [ "demo" ];

# Mount a VirtualBox shared folder.
# This is configurable in the VirtualBox menu at
# Machine / Settings / Shared Folders.
# fileSystems."/mnt" = {
#   fsType = "vboxsf";
#   device = "nameofdevicetomount";
#   options = [ "rw" ];
# };

# By default, the NixOS VirtualBox demo image includes SDDM and Plasma.
# If you prefer another desktop manager or display manager, you may want
# to disable the default.
# services.xserver.desktopManager.plasma5.enable = lib.mkForce false;
# services.displayManager.sddm.enable = lib.mkForce false;

# Enable GDM/GNOME by uncommenting above two lines and two lines below.
# services.xserver.displayManager.gdm.enable = true;
# services.xserver.desktopManager.gnome.enable = true;

# Set your time zone.
# time.timeZone = "Europe/Amsterdam";

# List packages installed in system profile. To search, run:
# \$ nix search wget
# environment.systemPackages = with pkgs; [
#   wget vim
# ];

# Enable the OpenSSH daemon.
 services.openssh.enable = true;

}