System

This repo holds my system config, which as of April 2025, is macOS.

It uses:

• nix-darwin
• Emacs
• Others:
  • Homebrew
  • WezTerm
  • Zsh
  • Tmux

Installation

• Install Homebrew

• Install Nix using Determinate Nix Installer:

curl -fsSL https://install.determinate.systems/nix | sh -s -- install --determinate

• Clone this repo into ~/src/system and cd to it

• Install nix-darwin

sudo nix run nix-darwin/master#darwin-rebuild -- switch

• Use nix-darwin

darwin-rebuild switch --flake .#deucalion

This will create a symlink /etc/nix-darwin -> ~/src/system/nix-darwin, so it's possible to run darwin-rebuild switch the next time.

• All tooling config files are symlinked and not managed by nix-darwin (or home-manager)

Cheatsheet

• List generations

darwin-rebuild --list-generations

• Rollback to previous generation

darwin-rebuild switch --rollback

• Run garbage collection manually

nix-collect-garbage

or a more aggressive garbage collection (removes old generations)

sudo nix-collect-garbage -d

• Clean up leftover generations older than 7 days with

nix-collect-garbage --delete-older-than 1d

Rebuild current config after a GC run:

darwin-rebuild switch