NixOS configuration

This repository keep track of my personal NixOS configuration.

Structure

flowchart TD
    subgraph configuration
        nostromo
        sanctuary
        default
    end
    subgraph modules
        alacritty
        bash
        git
        home-manager
        markdown
        neovim
        rust
        sway
    end

flake.nix-->nostromo
flake.nix-->sanctuary

nostromo-->home-manager
nostromo-->default

sanctuary-->home-manager
sanctuary-->default

sanctuary-->bash
sanctuary-->markdown
sanctuary-->rust

default-->alacritty
default-->git
default-->neovim
default-->sway

Loading

This setup use Flakes so the "entrypoint" is flake.nix.

Configuration

The configuration directory contains configuration specific to the hosts.

• Configuration specific nostromo: configuration/nostromo
• Configuration specific to sanctuary: configuration/sanctuary
• Default configuration: configuration/default.nix

Modules

The modules directory is related to the programs or services optionally imported.

• Module related to alacritty: modules/alacritty.nix
• Module related to bash: modules/bash.nix
• Module related to git: modules/git.nix
• Module related to home-manager: modules/home-manager.nix
• Module related to markdown: modules/markdown.nix
• Module related to neovim: modules/neovim
• Module related to rust: modules/rust
• Module related to sway: modules/sway

Usage

Rebuild the system from the local repository:

sudo nixos-rebuild switch --flake <path_to_repo>#hostname

The available hostnames available at the moment are:

• sanctuary (x86_64-linux)
• nostromo (aarch64-linux)

Example: sudo nixos-rebuild switch --flake .config/nixos#sanctuary

Note that <path_to_repo> can be the path to the local repository but also the remote repository:

sudo nixos-rebuild switch --flake github:owner/repo#hostname

Example: sudo nixos-rebuild switch --flake github:yozhgoor/nixos#nostromo

Upgrade

You can upgrade NixOS to the latest version by running:

nixos-rebuild switch --upgrade --flake <path_to_repo>#hostname

Note that auto-upgrade is enabled in configuration/default.nix.

Clean up

To remove old, unreferenced packages:

nix-collect-garbage

The following command deletes old roots, removing the ability to roll back to them:

nix-collect-garbage -d
sudo nix-collect-garbage -d

To delete all historical versions you can use

sudo nix profile wipe-history

Optimize

You can manually optimize the store using:

nix-store --optimise