20240107_configuration.nix

# Things that you have to do manually
# if you are re-installing or Gnome settings lost
# sign in to The Good Drive in Gnome file manager to mount that drive
# sing in to Google in Gnome - Online accounts
# use screen grabs from Google, Proton, Amazon, Bitwarden, in Authy and
# gnome authenticator to re-establish OTP provision
# sign into firefox
# probably more.....
# before you start logging into loads of site in firefox....
# set in firefox - settings - privacy & security - under use sustom settings for history
# untick "clear history when firefox closes" and this should keep you logged into e.g. fosstodon (which is where I tested it)

# 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’).

# 2023-11-27 ,lib added for parental controls
{ config, pkgs, ... }:  # lib added for printing 6-1-24
#{ config, pkgs, lib, ...}:

{
  imports =
    [ # Include the results of the hardware scan.
      ./hardware-configuration.nix
      # 2023-11-27 from https://github.com/jazmit/nixos-parental-controls/blob/main/nixos-parental-controls.nix
      #./nixos-parental-controls.nix
    ];

  # Bootloader.
  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;

  networking.hostName = "nixos"; # Define your hostname.
  # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.

  # Configure network proxy if necessary
  # networking.proxy.default = "http://user:password@proxy:port/";
  # networking.proxy.noProxy = "127.0.0.1,localhost,internal.domain";

  # Enable networking
  networking.networkmanager.enable = true;

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

  # Select internationalisation properties.
  i18n.defaultLocale = "en_GB.UTF-8";

  i18n.extraLocaleSettings = {
    LC_ADDRESS = "de_DE.UTF-8";
    LC_IDENTIFICATION = "de_DE.UTF-8";
    LC_MEASUREMENT = "de_DE.UTF-8";
    LC_MONETARY = "de_DE.UTF-8";
    LC_NAME = "de_DE.UTF-8";
    LC_NUMERIC = "de_DE.UTF-8";
    LC_PAPER = "de_DE.UTF-8";
    LC_TELEPHONE = "de_DE.UTF-8";
    LC_TIME = "de_DE.UTF-8";
  };

  # Enable the X11 windowing system.
  services.xserver.enable = true;

  # Enable the GNOME Desktop Environment.
  services.xserver.displayManager.gdm.enable = true;
  services.xserver.desktopManager.gnome.enable = true;

  # Configure keymap in X11
  services.xserver = {
    layout = "de";
    xkbVariant = "";
  };

  # Configure console keymap
  console.keyMap = "de";

  # Enable CUPS to print documents.
  services.printing.enable = true;
  # see https://nixos.wiki/wiki/Printing
  services.printing.drivers = [pkgs.brlaser]; #not sure if this is being used by the setup below....
  # the service below was causing troule so I did the direct hardware.printers below
  #services.avahi = {
  #enable = true;
  #nssmdns = true;
  #openFirewall = true;
  #};

  # 05-01-2024 getting error in CUPS
  #
  # potentially useful website to debug this:
  # https://devicetests.com/fixing-cups-browsed-error-ubuntu-printing
  # to get cups type the following into the address bar of a browser:
  # http://localhost:631/
  # I deleted the printers from the Gnome settings and rebooted.
  # cups and gnome have this printer only then:
  # Brother_MFC_L3770CDW_series
  # then the error message came up in cups next to the printer:
  # “No suitable Destination Host found by cups-browsed”
  # running the following at the command line fixed it:
  # systemctl restart cups-browsed
  # but doing this when there were two differently named printers before dit not fix it.
  # the above is totally tempremental - seems to be paused all the time
  # https://discourse.nixos.org/t/brother-dcp-572dw-wrapper/8113/2
  # suggests the following:
  # start 06012024

  #hardware =
  ##let
  ##  brother = "Brother_MFC_L3770CDW_series";
  ##  hostName = "printer.nixos"; #??? where get this from ??? host is the printer ???? see web link
  ##in
  #{
  #  printers = {
  #    ensureDefaultPrinter = "Brother_MFC_L3770CDW_series"   ;
  #    ensurePrinters = [
  #      {
  #        name = "Brother_MFC_L3770CDW_series" ;
  #        deviceUri = "ipp://192.168.2.31:631/printers/Brother_MFC_L3770CDW_series";
  #        model = "everywhere";
  #        description = "Brother_MFC_L3770CDW";
  #        location = "upstairs upstairs";
  #      }
  #    ];
  #  };
  #};
  # but the above did not work for all sorts or reasons perhaps....

  # 7-1-24 install printer using wiki https://nixos.wiki/wiki/Printing#Printer_sharing
  # section "adding printers"
  # use this URL to check what CUPS is doing:    http://localhost:631/printers/
  # run this command line command (intalled as package in the packages bit below) as an option for printer control:   system-config-printer
  hardware.printers = {
  ensurePrinters = [
    {
      name = "Brother_MFC_L3770CDW_series";
      location = "Home; upstairs upstairs";
      deviceUri = "http://192.168.2.31:631"; #there is only one printer on that port so no further name specified...
      # note that the wiki example has deviceUri = "http://192.168.178.2:631/printers/Dell_1250c";
      # so perhaps if there is more than one printer one has to be more specific...
      # using device uri from "discovered" by CUPS using the when "change printer" menu in CUPS did not work
        model = "drv:///sample.drv/generic.ppd"; #using this works on 7-1-23 18:28
      # to see which drivers are installed and available
      # as stated in https://www.cups.org/doc/admin.html   under  "Printer Drivers and PPDs"
      # use command line:
      # lpinfo -m
      # but this CUPS site recommends in fact using "everywhere" option....
      # model = "everywhere";
      # but this produces error containing amongst other things the following message:
      # "lpadmin: IPP Everywhere driver requires an IPP connection."
      # and this error present whether or not avahi service is commented out above --- even after reboot ----
      # the above is used with services.avahi NOT used i.e commented out above
      ppdOptions = {
        PageSize = "A4";
      };
    }
  ];
  ensureDefaultPrinter = "Brother_MFC_L3770CDW_series";
};

  #	dnssd://Brother%20MFC-L3770CDW%20series._ipp._tcp.local/?uuid=e3248000-80ce-11db-8000-3c2af4d70a6b

  # end 060102024
  # Enable sound with pipewire.
  sound.enable = true;
  hardware.pulseaudio.enable = false;
  security.rtkit.enable = true;
  services.pipewire = {
    enable = true;
    alsa.enable = true;
    alsa.support32Bit = true;
    pulse.enable = true;
    # If you want to use JACK applications, uncomment this
    #jack.enable = true;

    # use the example session manager (no others are packaged yet so this is enabled by default,
    # no need to redefine it in your config for now)
    #media-session.enable = true;
  };

  # Enable touchpad support (enabled default in most desktopManager).
  # services.xserver.libinput.enable = true;

  # Define a user account. Don't forget to set a password with ‘passwd’.
  users.users.adingbatponder = {
    isNormalUser = true;
    description = "adingbatponder";
    extraGroups = [ "networkmanager" "wheel" ];
    packages = with pkgs; [
      firefox
    #  thunderbird
    ];
  };

  # 2023-11-27 define a child1 account for parental controls
  users.users.child1 = {
    isNormalUser = true;
    description = "child1";
    extraGroups = [ "networkmanager"]; # removed "wheel" as compared with adingbatponder
    packages = with pkgs; [
      firefox
    #  thunderbird
    ];
  };


  # Allow unfree packages
  nixpkgs.config.allowUnfree = true;

  # 10-12-2023 $$ suggestion from @[email protected]
  # due to kernel issue as reported here:
  # https://hachyderm.io/@danderson/111553570317756603
  # which links to this:
  # https://lwn.net/Articles/954285/

  boot.kernelPackages = pkgs.linuxPackages_latest;

  # end 10-12-2023 $$
  # 10-12-2023
  # setting nicer manpages
  # from https://nixos.wiki/wiki/Man_pages
  # first time then run
  # man configuratoin.nix
  # returns error
  #
  # so I ran
  # makewhatis /nix/store/z7w66bgp3qym4imw6s8rk08lp8ns03lb-system-path/share/man
  # and get something that works but does not seem as nice as it should be
  # that kinda sucks do did the other stuff marked after §
  #documentation.man = {
  # In order to enable to mandoc man-db has to be disabled.
  #man-db.enable = false;
  #mandoc.enable = true;
  #};
  # $
  # environment.systemPackages = [ pkgs.man-pages pkgs.man-pages-posix ];
  # above is moved down
  documentation.dev.enable = true;
  # end $

  # List packages installed in system profile. To search, run:
  # $ nix search wget
  environment.systemPackages = with pkgs; [
  # $ 2023-12-10
    man-pages
    man-pages-posix
  # $
    groff # reads plain text and makes pdf - needed to manpage to pdf
  #  mandoc # from https://tex.stackexchange.com/questions/390724/how-to-create-pdf-from-linux-man-pages-so-that-style-is-presereved
    # which above site recomments piping to mandoc -T pdf > filename.pdf
  #  vim # Do not forget to add an editor to edit configuration.nix! The Nano editor is also installed by default.
  #  wget
  # bitwarden as GUI crashed in some generatons.
  # from: https://discourse.nixos.org/t/how-to-get-back-to-a-kernel-version-where-all-packages-work-as-they-used-to/36020/2
  # Try running the bitwarden app from the terminal with the command
  # bitwarden --disable-gpu
  # Alternatively try running it from the terminal with
  # env WAYLAND_DISPLAY= bitwarden
     bitwarden #for problems see above
     protonvpn-gui
   # authy failed to work so intalled google-authenticator even though apparently it is not so fab
     authy
   # google-authenticator runs from command line> google-authenticator
     google-authenticator
   # Gnome authenticator
     authenticator
     gnome.gnome-keyring
     protonmail-bridge
     threema-desktop
     whatsapp-for-linux
  #  following removed because it seem not to result in any icon
  #  home-assistant-component-tests.govee_ble
     gimp
     vscode
     git
     thunderbird
  #  firefox stopped working 23-11-23 so installed fork librewolf on recommendation of Project Insanity@[email protected]
     librewolf
     firefox
  # brave installed becaus firefox crashed for certain security setting pages in bitwarden.com
     brave
     gnome.gnome-tweaks
  #  element-desktop does not launch any sensible gui to tried element-web instead
  #  element-desktop
     element-web
     skypeforlinux
     teams-for-linux
  # teams commented out because creates errors
  #   teams
  # pdf stuff
     # recommended on https://opensource.com/alternatives/adobe-acrobat
     evince
     # just a random simple one
     mupdf
  # command line stuff follows:
     usbutils
     protonvpn-cli
     system-config-printer # to see printer behaviour in cups
  # end of command line stuff.
  # modem for sim lte
     modemmanager
     modem-manager-gui
  # for testing script
  #   screen
  #   irssi
     etcher #to make OS images
  #   python39 # required by default.nix in /etc/nixos/per-user-blocky
     emacs # GNU emacs - if you can't beat them, join them:  https://www.gnu.org/software/emacs/
     vlc  #video stuff
     bottom # system monitor run from command line:  btm
     audacity # sound editor with graphical UI
     nextcloud-client # nextcloud https://nextcloud.com/
     libreoffice #essential
     pandoc #docment format converter
  #
  #* imported list of packages follows, some commneted out:
  #* 20240101 from https://nixos-and-flakes.thiscute.world/nixos-with-flakes/start-using-home-manager
    neofetch
    nnn # terminal file manager

    # archives
    zip
    xz
    unzip
    p7zip

    # utils
    ripgrep # recursively searches directories for a regex pattern
    #jq # A lightweight and flexible command-line JSON processor
    #yq-go # yaml processer https://github.com/mikefarah/yq
    # exa # A modern replacement for ‘ls’ generates error
    fzf # A command-line fuzzy finder

    # networking tools
    mtr # A network diagnostic tool
    #iperf3
    #dnsutils  # `dig` + `nslookup`
    #ldns # replacement of `dig`, it provide the command `drill`
    #aria2 # A lightweight multi-protocol & multi-source command-line download utility
    #socat # replacement of openbsd-netcat
    #nmap # A utility for network discovery and security auditing
    #ipcalc  # it is a calculator for the IPv4/v6 addresses

    # misc
    cowsay
    file
    which
    tree
    gnused
    gnutar
    gawk
    zstd
    gnupg

    # nix related
    #
    # it provides the command `nom` works just like `nix`
    # with more details log output
    nix-output-monitor

    # productivity
    hugo # static site generator
    glow # markdown previewer in terminal

    btop  # replacement of htop/nmon
    iotop # io monitoring
    iftop # network monitoring

    # system call monitoring
    strace # system call monitoring
    ltrace # library call monitoring
    lsof # list open files

    # system tools
    sysstat
    lm_sensors # for `sensors` command
    ethtool
    pciutils # lspci
    usbutils # lsusb
  #*  20240101 end of import from https://nixos-and-flakes.thiscute.world/nixos-with-flakes/start-using-home-manager
  ];

    nixpkgs.config.permittedInsecurePackages = [
                # 27-10-2023 to make error for bitwarden pass following recommendation from @[email protected]
		"electron-24.8.6"

		# 18-11-2023 for teams to work
       		# "teams-1.5.00.23861"
                "electron-12.2.3"  # for etcher to work
                "electron-19.1.9"   # for upgrade to 23.11 to work see ** note 03-12-2023
              ];

  systemd.user.services.startprotonvpn = {
  # startprotonvpn is the arbitrary name I have given this service
  description = "makes proton vpn start when user logs in after machine has just been booted";
  script = ''
    ${pkgs.protonvpn-cli}/bin/protonvpn-cli r
  '';
  # to run protonvpn from the command line the package protonvpn-cli was listed above in the environment.systempackages
  # the option r uses the previously used protonvpn connection as set by user manually in the GUI or command line
  # the so called killswitch setting (if on it cuts internet access if the vpn connection is lost or otherwise not active) in the GUI is on in this case - not sure that matters for this to work
  wantedBy = [ "graphical-session.target" ];
  partOf = [ "graphical-session.target" ];
};
  # if running the the following command at the command line:
  # systemctl status startprotonvpn.service
  # the shell returns the following message:
  # Unit startprotonvpn.service could not be found.
  # so testing the above so-called service by eliminating error messages when using the above systemctl command was/is a waste of time in this case


  # 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;
  # };

  # List services that you want to enable:

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

  # Open ports in the firewall.
  # networking.firewall.allowedTCPPorts = [ ... ];
  # 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 = "23.05"; # Did you read the comment?


#  # this is an attempt at parental conrols
#  # 27-11-23
#  # from https://github.com/jazmit/nixos-parental-controls/blob/main/nixos-parental-controls.nix
#  # made in /ect/nixos the directory for per-user-blocky
#  # put the module in imports above
#  # from https://github.com/jazmit/nixos-parental-controls/tree/main
#  # using the link above but puttin import elsewhere and adding lib as above
#services.parental-controls = {
#    # set to false because not working
#    enable = true;
#    default = {
#     mode = "blacklist";
#     block-ads = true;
#    };
#    # added adingbatponder here
#    per-user = {
#      adingbatponder = {
#        mode = "blacklist";
#        blacklist = [
#          "/bbc/"
#        ];
#      };
#    #per-user = {
#      child1 = {
#        mode = "whitelist";
#        whitelist = [
#          "/bbc/"
#          "/numbots/"
#          "/ttrockstars/"
#         "/lichess/"
#         "/typingclub.com/"
#         "/cloudflare/"
#         "/googleapis/"
#         "/gstatic.com/"
#         "/prismatic.io/"
#          "/hs-scripts.com/"
 #       ];
 #     };
 #    # child2 = {
 #    #   mode = "blacklist";
 #    #   block-adult = true;
 #    #   blacklist = [
 #    #       "/youtube/"
 #    #   ];
 #    # };
 #   };
 # };


# version control
# as suggested by Thomas Woolford
# @[email protected]
# he wrote on 27-11-23 in fosstodon
# This will create a folder in /etc named nixos-built-with that will be filled
# with the contents of /etc/nixos at the time that
# the current generation was built.
# https://ioc.exchange/@twoolie/111501690072498877
# testing shows this overwrites the previous one each time
 environment.etc."nixos-built-with".source = ./.;
}  #inserted to see if error goes away
#** note 03-12-2023
#3-12-2023 for upgrade to 23.11
# as per https://discourse.nixos.org/t/nixos-23-11-released/36210/12
#sudo nix-channel --add https://channels.nixos.org/nixos-23.11 nixos
#sudo nixos-rebuild boot --upgrade
## You probably get some errors and warnings here that you need to take care
## of, do so and repeat until the above command succeeds
#sudo shutdown -r now
# end ** note 03-12-2023

# from
# https://discourse.nixos.org/t/how-to-get-back-to-a-kernel-version-where-all-packages-work-as-they-used-to/36020/6
#When you rebuild your system after changing configuration.nix, the result depends both on the contents of configuration.nix and on the current value of the nixos channel for root.
#That channel is updated if you run nixos-rebuild with the --upgrade option, and not otherwise.
#So the reason you keep getting the newer kernel is because the newer value of the nixos channel specifies a newer kernel version.
#
#If you want to build the current configuration.nix against an older value of the nixos channel, you can rollback the channel itself using nix-channel --rollback, optionally specifying a channel generation number.
#You can see the channel generations with
#  ls /nix/var/nix/profiles/per-user/root
#—each entry that looks like channels-*-link indicates a generation number.
#If you rollback your channel (do this as root!) to a sufficiently old generation, and then run nixos-rebuild without --upgrade, you’ll get all the package versions (including the kernel) associated with the channel at the time of that channel generation,
#configured with the current contents of configuration.nix. No restoring anything from backup.