wineee/nixos-config-1

NixOS configuration files

NixOS configuration

Create a bootable USB drive

• Download NixOS to $ISO_PATH
• insert drive
• lsblk -> find out drive name (e.g. /dev/sdb) $DRIVE
• run (as sudo) dd bs=4M if=$ISO_PATH of=$DRIVE conv=fdatasync status=progress && sync

Actual installation

Roughly this https://qfpl.io/posts/installing-nixos/

• lsblk -> find out disk name (e.g. /dev/sda) $DISK
• gdisk $DISK
  • p (print)
  • d (delete)
  • n (new)
    • number=1, begin=default, end=+1G, hex code=ef00 (not needed if dual boot) ($BOOT from now on, or /dev/sda1 etc)
    • number=2, begin=default, end=default, hex code=8e00 ($MAIN from now on)
  • w (write)
• encryption
  • cryptsetup luksFormat $MAIN
  • cryptsetup luksOpen $MAIN nixos-enc
  • pvcreate /dev/mapper/nixos-enc
  • vgcreate nixos-vg /dev/mapper/nixos-enc
  • lvcreate -L <swap size, e.g. 8G> -n swap nixos-vg
  • lvcreate -l 100%FREE -n root nixos-vg
• create fs
  • mkfs.vfat -n boot $BOOT (not needed if dual boot)
  • mkfs.ext4 -L nixos /dev/nixos-vg/root
  • mkswap -L swap /dev/nixos-vg/swap
  • swapon /dev/nixos-vg/swap
• mount
  • mount /dev/nixos-vg/root /mnt
  • mkdir /mnt/boot
  • mount $BOOT /mnt/boot
• generate config
  • nixos-generate-config --root /mnt
• add stuff to config
  • if dual boot check out https://nixos.wiki/wiki/Dual_Booting_NixOS_and_Windows

dual boot:

boot.loader.grub.enable = true;
boot.loader.grub.version = 2;
boot.loader.grub.device = "/dev/sda";
boot.loader.grub.useOSProber = true;

required:

boot.initrd.luks.devices = {
  root = {
    device = "$MAIN";
    preLVM = true;
  };
};

# If not dual-booting with GRUB
boot.loader.systemd-boot.enable = true;

networking.networkmanager.enable = true;

users.users.farlion = {
  extraGroups = ["wheel" "video" "audio" "disk" "networkmanager"];
};

• nixos go brrrr
  • nixos-install
  • reboot

to have a DM after first boot:

services.xserver = {
  enable = true;
  displayManager = {
    gdm = {
      enable = true;
      wayland = false;
    };
  };
  desktopManager.plasma5.enable = true;  # or xfce or whatever
  # or
  # windowManager.xmonad.enable = true;

  # to be able to mount an external drive to get secrets etc. for cloning from gh
  boot.supportedFilesystems = [ "ntfs" ];

};

Useful

• connect to internet from nmcli
  • find out interface: nmcli d ($IF)
  • enable interface: nmcli r wifi on
  • search networks: nmcli d wifi list
  • connect: nmcli d wifi connect $(B)SSID password $PASSWORD

Enable this setup

($CONFIG is the location of this repo)

1. change your name to farlion because it's hardcoded in the configurations
2. passwd farlion and then su
3. git clone https://github.com/workflow/nixos-config.git $CONFIG
4. Add $CONFIG/configuration.nix to the imports in /etc/nixos/configuration.nix (sample configuration is in assets)
5. Add $CONFIG/nixos-config/hardware-configuration.nix to the same list
6. From$CONFIG/assets/root-configuration-*.nix as a template, set required settings like the networking.hostname and the correct networking interfaces to enable DHCP
7. sudo nix-channel --add https://github.com/NixOS/nixos-hardware/archive/master.tar.gz nixos-hardware
8. sudo nix-channel --update
9. sudo mkdir -m 0755 -p /nix/var/nix/{profiles,gcroots}/per-user/farlion (for home-manager)
10. sudo nixos-rebuild switch
11. Reboot

Post-installation steps

1. On an existing syncthing device, mutually add the new device
2. Push addition of new syncthing device on old device
3. On new device, Accept new folders as "Receive only" (check the path is correct!) on new device and let it sync
4. Push any local $CONFIG config changes to github
5. Remove local $CONFIG and symlink it to ~/code/nixos-config
6. Copy and symlink /etc/nixos/configuration to a new asset file under assets/
7. Change root passwd
8. Login to mega (mega-cmd for interactive mode)
9. Manually set up Duplicati backups (config under ~/.backup)
10. Rerun n

Acknowledgements

A lot of this was looted from https://github.com/alexpeits/nixos-config. Thank you!