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Matthias’ NixOS & Nix-Darwin System Configuration Flake

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System Components

NixOS - WaylandNixOS - Wayland/XorgNixOS - XorgDarwin
DM/GDMLightDM/
WM/DEHyprlandGnomeBspwmRaycast
CompositorHyprlandMutterPicom (jonaburg)/
BarEww + Waybar/Polybar/
HotkeysHyprland/SxhkdRaycast
LauncherWofiGnomeRofiRaycast
GTK ThemeOrchis-DarkAdwaitaOrchis-Dark/
NotificationsSwayncGnomeDunst/
TerminalKittyKittyKittyKitty
Used by hostBeelink, XPSWorkVM & ProbookMacBook{Intel or AirM1}

There are some other desktop environments/window manager (See NixOS - Other). Just link to correct default/home.nix in ./hosts/<host>/default and home.nix. There is also a general Nix config with hostname pacman that can be used on pretty much any disto.

Components relevant to all hosts:

ShellZsh
TerminalKitty
EditorsNeovim

NixOS Installation Guide

This flake currently has 3 host setups

  1. Beelink & XPS
    • UEFI boot w/ systemd-boot
  2. Work & Probook
    • UEFI boot w/ grub
  3. vm
    • Legacy boot w/ grub

Flakes can be build with:

  • $ sudo nixos-rebuild switch --flake <path>#<hostname>
  • example $ sudo nixos-rebuild switch --flake .#desktop

Partitioning

This will depend on the host chosen.

UEFI

In these commands

  • Partition Labels:
    • Boot = “boot”
    • Home = “nixos”
  • Partition Size:
    • Boot = 512MiB
    • Swap = 8GiB
    • Home = Rest
  • No Swap: Ignore line 3 & 7
# parted /dev/sda -- mklabel gpt
# parted /dev/sda -- mkpart primary 512MiB -8GiB
# parted /dev/sda -- mkpart primary linux-swap -8GiB 100%
# parted /dev/sda -- mkpart ESP fat32 1MiB 512MiB
# parted /dev/sda -- set 3 esp
# mkfs.ext4 -L nixos /dev/sda1
# mkswap -L /dev/sda2
# mkfs.fat -F 32 -n boot /dev/sda3

Legacy

In these commands

  • Partition Label:
    • Home & Boot = “nixos”
    • Swap = “swap”
  • Partition Size:
    • Swap = 8GiB
    • Home = Rest
  • No swap: Ignore line 3 and 5
# parted /dev/sda -- mklabel msdos
# parted /dev/sda -- mkpart primary 1MiB -8GiB
# parted /dev/sda -- mkpart primary linux-swap -8GiB 100%
# mkfs.ext4 -L nixos /dev/sda1
# mkswap -L /dev/sda2

Installation

UEFI

In these commands

  • Mount partition with label … on …
    • “nixos” -> /mnt
    • “boot” -> /mnt/boot
# mount /dev/disk/by-label/nixos /mnt
# mkdir -p /mnt/boot
# mount /dev/disk/by-label/boot /mnt/boot

Legacy

# mount /dev/disk/by-label/nixos /mnt

Mounting Extras

In these commands

  • /mnt/ssd
  • Label of storage:
    • ssd2
  • If storage has no label:
    • mount /dev/disk/by-uuid/ssd2 /mnt/ssd
# mkdir -p /mnt/ssd
# mount /dev/disk/by-label/ssd2 /mnt/ssd

Generate

In these commands

  • Swap is enable:
    • Ignore if no swap or enough RAM
  • Configuration files are generated @ /mnt/etc/nixos
    • If you are me, you don’t need to do this. Hardware-configuration.nix already in flake.
  • Clone repository
# swapon /dev/sda2
# nixos-generate-config --root /mnt
# nix-env -iA nixos.git
# git clone https://github.com/matthiasbenaets/nixos-config /mnt/etc/nixos/<name>

Optional if you are not me
# cp /mnt/etc/nixos/hardware-configuration.nix /mnt/etc/nixos/nixos-config/hosts/<host>/.

Possible Extra Steps

  1. Switch specific host hardware-configuration.nix with generated /mnt/etc/nixos/hardware-configuration.nix
  2. Change existing network card name with the one in your system
    • Look in generated hardware-configuration.nix
    • Or enter $ ip a
  3. Change username in flake.nix
  4. Set a users.users.${user}.initialPassword = ...
    • Not really recommended. It’s maybe better to follow last steps
  5. If you are planning on using the doom-emacs alternative home.nix, don’t forget to rebuild after the initial installation when you link to this nix file.
    • This is because userActivationScript is used for this setup and this will time out during the rebuild.
    • It will automatically install if $HOME/.emacs.d does not exist
      • If this dir already exist, move or delete it.

Install

In these commands

  • Move into cloned repository
    • in this example /mnt/etc/nixos/<name>
  • Available hosts:
    • desktop
    • laptop
    • vm
# cd /mnt/etc/nixos/<name>
# nixos-install --flake .#<host>

Finalization

  1. Set a root password after installation is done
  2. Reboot without liveCD
  3. Login
    1. If initialPassword is not set use TTY:
      • Ctrl - Alt - F1
      • login as root
      • # passwd <user>
      • Ctrl - Alt - F7
      • login as user
  4. Optional:
    • $ sudo mv <location of cloned directory> <prefered location>
    • $ sudo chown -R <user>:users <new directory location>
    • $ sudo rm /etc/nixos/configuration.nix - This is done because in the past it would auto update this config if you would have auto update in your configuration.
    • or just clone flake again do apply same changes.
  5. Dual boot:
    • OSProber probably did not find your Windows partition after the first install
    • There is a high likelihood it will find it after:
      • $ sudo nixos-rebuild switch --flake <config path>#<host>
  6. Rebuilds:
    • $ sudo nixos-rebuild switch --flake <config path>#<host>
    • For example $ sudo nixos-rebuild switch --flake ~/.setup#matthias

Nix Installation Guide

This flake currently has 1 host

  1. pacman

The Linux distribution must have the nix package manager installed. $ sh <(curl -L https://nixos.org/nix/install) --daemon To be able to have an easy reproducible setup when using the nix package manager on a non-NixOS system, home-manager is a wonderful tool to achieve this. So this is how it is set up in this flake.

Installation

Initial

In these commands

  • Get git
  • Clone repository
  • First build of the flake
    • This is done so we can use the home-manager command is part of PATH.
$ nix-env -iA nixpkgs.git
$ git clone https://github.com/matthiasbenaets/nixos-config ~/.setup
$ cd ~/.setup
$ nix build --extra-experimental-features 'nix-command flakes' .#homeConfigurations.<host>.activationPackage
$ ./result/activate

Rebuild

Since home-manager is now a valid command we can rebuild the system using this command. In this example it is build from inside the flake directory:

  • $ home-manager switch --flake <config path>#<host>

This will rebuild the configuration and automatically activate it.

Finalization

Mostly optional or already correct by default

  1. NixGL gets set up by default, so if you are planning on using GUI applications that use OpenGL or Vulkan:
    • $ nixGLIntel <package>
    • or add it to your aliases file
  2. Every rebuild, and activation-script will run to add applications to the system menu.
    • it’s pretty much the same as adding the path to XDG_DATA_DIRS
    • if you do not want to or if the locations are different, change this.

Nix-Darwin Installation Guide

This flake currently has 1 host

  1. macbook

The Apple computer must have the nix package manager installed. In terminal run command: $ sh <(curl -L https://nixos.org/nix/install)

Setup

In these commands

  • Create a nix config directory
  • Allow experimental features to use flakes
$ mkdir ~/.config/nix
$ echo "experimental-features = nix-command flakes" >> ~/.config/nix/nix.conf

Installation

Initial

In these commands

  • Get git
  • Clone repository
  • First build of the flake on Darwin
    • This is done because the darwin command is not yet available
$ nix-env -iA nixpkgs.git
$ git clone https://github.com/matthiasbenaets/nixos-config ~/.setup
$ cd ~/.setup
$ nix build .#darwinConfigurations.<host>.system
$ ./result/sw/bin/darwin-rebuild switch --flake .#<host>

/result is located depending on where you build the system.

Rebuild

Since darwin is now added to the PATH, you can build it from anywhere in the system. In this example it is rebuilt from inside the flake directory:

  • $ darwin-rebuild switch --flake .#<host>

This will rebuild the configuration and automatically activate it.

Finalization

Mostly optional or already correct by default

  1. Change default shell for Terminal or iTerm.
    • Terminal/iTerm > Preferences > General > Shells open with: Command > /bin/zsh
  2. Disable Secure Keyboard Entry. Needed for Skhd.
    • Terminal/iTerm > Secure Keyboard Entry
  3. Install XCode to get complete development environment.
    • $ xcode-select --install

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