DerGrumpfs Nix Configuration

A unified Nix configuration for both NixOS and macOS using flakes, nix-darwin, and Home Manager.

About

A single repository managing both machines declaratively with Nix. Shared home-manager configuration across platforms with platform-specific modules where needed.

Author: Phil Keier

Machines

Hostname	Platform	Architecture
cyper-desktop	NixOS	x86_64-linux
cyper-mac	macOS	x86_64-darwin

Prerequisites

NixOS

Nix is available out of the box. Enable flakes in your configuration.

macOS

Install Nix using the Determinate Systems installer.

Note: Homebrew is managed declaratively via nix-homebrew — if already installed it will auto-migrate, otherwise it is installed automatically.

Quick Start

Clone

git clone https://github.com/DerGrumpf/nix ~/.config/nix
cd ~/.config/nix

Customize

Replace placeholders in home/git.nix:

DerGrumpf → your Git username
p.keier@beyerstedt-it.de → your Git email

Apply

# NixOS
sudo nixos-rebuild switch --flake .#cyper-desktop

# macOS
darwin-rebuild switch --flake .#cyper-mac

# Or after initial setup on either machine
nix-switch

Project Structure

graph TD
    flake[flake.nix] --> desktop[nixosConfigurations\ncyper-desktop]
    flake --> mac[darwinConfigurations\ncyper-mac]

    desktop --> nixos[nixos/\nNixOS system modules]
    desktop --> hd[hosts/cyper-desktop/\nhardware + networking]
    desktop --> home[home/\nshared home-manager]

    mac --> darwin[darwin/\nmacOS system modules]
    mac --> hm[hosts/cyper-mac/\nhost specific]
    mac --> home

    home --> shared["shared\npackages, git, shell, python\nnixvim, nixcord, spicetify\nfloorp, obsidian"]
    home --> deskmod[desktop/]

    deskmod --> dlinux["Linux only\nhyprland, niri\nwaybar, rofi\ngtk, qt, onlyoffice\nxdg, waypaper"]
    deskmod --> dmac["macOS only\nsketchybar"]

Secrets

Secrets are managed with sops-nix and age encryption. The age key must be present at:

Linux: ~/.config/sops/age/keys.txt
macOS: ~/.config/sops/age/keys.txt

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