Nix Config (NixOS + macOS)

This repo is a flake-based configuration for:

• NixOS (desktop, server, laptop)
• macOS via nix-darwin (macbook)
• Home Manager for user-level packages and dotfiles

It is organized around small, composable system modules under modules/, user modules under home/, and thin host entrypoints under hosts/.

Layout

• flake.nix: flake inputs + system outputs
• hosts/
  • hosts/nixos-desktop/: NixOS desktop host entrypoint + hardware config
  • hosts/nixos-server/: NixOS server host entrypoint + hardware config
  • hosts/nixos-laptop/: NixOS laptop host entrypoint
  • hosts/macbook/: nix-darwin host entrypoint
• home/
  • home/base/cli/: shared CLI modules + nvim-config
  • home/base/gui/: shared GUI modules (stylix, ghostty, spicetify)
  • home/linux/gui/: Linux GUI modules (Hyprland, rofi, waybar, etc.)
  • home/darwin/gui/: macOS GUI layer (currently just base/gui)
• modules/
  • modules/nixos/: NixOS modules (boot, desktop, services, apps, input)
  • modules/darwin/: nix-darwin modules (system defaults, homebrew)

Usage

NixOS

1. Partition with cfdisk Run cfdisk on your target drive (e.g., /dev/nvme0n1).

sudo cfdisk /dev/nvme0n1

Inside the cfdisk interface:

• Select Label Type: Choose gpt.
• Create Boot Partition: * Select New. Size: 512M. Type: Select Type and choose EFI System.
• Create Root Partition: * Select the remaining Free space. Select New (default size uses the rest of the disk). Type: Leave as Linux filesystem (default).
• Write & Quit: Select Write, type yes, then select Quit.

2. Format the Partitions Now that the partitions exist, apply the filesystems.

# Format the EFI partition (usually p1)
sudo mkfs.fat -F 32 -n boot /dev/nvme0n1p1

# Format the Root partition (usually p2)
sudo mkfs.ext4 -L nixos /dev/nvme0n1p2

3. Mount to /mnt You need to mount the root first so that the boot directory has a physical place to live on the disk.

# Mount the root partition to /mnt
sudo mount /dev/disk/by-label/nixos /mnt

# Create the boot mount point and mount the EFI partition
sudo mkdir -p /mnt/boot
sudo mount /dev/disk/by-label/boot /mnt/boot

4. Clone and Apply Now that your environment is staged at /mnt, you can bring in your flake.

# Clone your repo into the mounted system
sudo git clone https://github.com/phuchoang2603/nixos.git /mnt/etc/nixos

sudo nixos-generate-config --root /mnt --show-hardware-config | sudo tee /mnt/etc/nixos/hardware-configuration.nix

# Install the system
# Using --root /mnt tells NixOS to install to the disk, not the live ISO
sudo nixos-install --flake /mnt/etc/nixos#nixos-desktop

5. Change Password with nixos-enter If you need to change the root password or any user password after installation:

# Reboot into the installed system, then run:
sudo nixos-enter --root /mnt -c "passwd root"
sudo nixos-enter --root /mnt -c "passwd felix"

macOS (nix-darwin)

darwin-rebuild switch --flake .#macbook