installation

name	installation
description	Step-by-step installation guide for Nix and dotfiles setup including nix.conf configuration, channel updates, home-manager, and nix-darwin

Installation

This guide covers installation for both macOS (using nix-darwin) and NixOS.

macOS Installation:

• 1. Create dotfiles directory
• 2. Set up local nix.conf
• 3. Install nix
• 4. Set up global nix.conf
• 5. Update nix channel
• 6. Apply home-manager config
• 7. Launch zsh
• 8. Apply darwin config

NixOS Installation:

• NixOS Setup

1. Craete a directory that matches the ghq root.

cd ~
mkdir -p git_repos/github.com/barleytea
cd git_repos/github.com/barleytea
git clone https://github.com/barleytea/dotfiles.git

2. Set up local nix.conf

mkdir -p "$HOME/.config/nix"
echo 'experimental-features = nix-command flakes' > "$HOME/.config/nix/nix.conf"
echo 'use-xdg-base-directories = true' >> "$HOME/.config/nix/nix.conf"
echo 'warn-dirty = false' >> "$HOME/.config/nix/nix.conf"

3. Install nix

curl --proto '=https' --tlsv1.2 -sSf -L https://install.determinate.systems/nix | sh -s -- install --no-confirm
source /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh

4. Set up global nix.conf

1. edit /etc/nix/nix.conf

sudo vi /etc/nix/nix.conf

1. add the following to the file

extra-trusted-users = miyoshi_s
use-xdg-base-directories = true

1. restart nix-daemon

Determinate Systems の Nix は modern launchd で管理されるため、kickstart を使う（unload/load は非対応）。

sudo launchctl kickstart -k system/systems.determinate.nix-daemon

5. Update nix channel

nix-channel --add https://nixos.org/channels/nixpkgs-unstable
nix-channel --update

6. Apply home-manager config

cd ~/git_repos/github.com/barleytea/dotfiles/darwin
nix flake update
nix run nixpkgs#home-manager -- switch --flake .#home --impure

7. Launch zsh

zsh

8. Apply darwin config

cd ~/git_repos/github.com/barleytea/dotfiles
make nix-darwin-apply

---

NixOS Setup

For NixOS systems, the installation process is different as NixOS manages the entire system configuration.

1. Create dotfiles directory

cd ~
mkdir -p git_repos/github.com/barleytea
cd git_repos/github.com/barleytea
git clone https://github.com/barleytea/dotfiles.git

2. Set up local nix.conf

mkdir -p "$HOME/.config/nix"
echo 'experimental-features = nix-command flakes' > "$HOME/.config/nix/nix.conf"
echo 'use-xdg-base-directories = true' >> "$HOME/.config/nix/nix.conf"
echo 'warn-dirty = false' >> "$HOME/.config/nix/nix.conf"

3. Copy hardware configuration

cd ~/git_repos/github.com/barleytea/dotfiles/nixos
sudo nixos-generate-config --show-hardware-config > hardware-configuration.nix

4. Update system configuration

Edit nixos/configuration.nix and nixos/flake.nix to match your system.

5. Build and apply NixOS configuration

cd ~/git_repos/github.com/barleytea/dotfiles
sudo nixos-rebuild switch --flake ./nixos#desktop

This command applies both system and home-manager configurations.

6. Reboot

sudo reboot