NixOS Config

My NixOS configuration with multi-host setup, a few GitHub Actions, personal build cache, checks via pre-commit hooks & CI, and Catppuccin theme for all programs.

Key components:

• NixOS for system configuration
• Home Manager for user configuration. Most user-space programs are installed and configured via Home Manager.
• Hyprland as Wayland compositor & window manager. It's very fast, looks amazing, and has a lot of features. Now has a huge community and is finally stable!
• Hyprpanel a panel, widgets, and notifications for Hyprland. Has very good defaults and doesn't require much configuration.
• Ghostty - an amazing modern terminal emulator. Very performant, has a lot of features and super good defaults.
• Catppuccin theme for everything - because it's beautiful, easy on eyes, and has an implementation for every app in the world. It's automatically applied to all programs via cattppuccin/nix.

Minor stuff:

• Starship terminal prompt. Nothing can beat it in terms of speed, features, and looks.
• YubiKey for SSH and GPG. It makes life easier and more secure.
• VS Code and Zed Editor setups. I am moving to Zed while

Usage

Installation

prerequisites: nix

The repo contains a helper justfile to assist with common NixOS management tasks. just, unbuffer (provided by expect package) and nom commands are required to use it. They can be installed with Nix in case they are missing:

nix-shell -p just expect nix-output-monitor

To test a new NixOS build, run:

just nixos-rebuild <host>

This will download, build and install system packages and configurations.

To make the build permanent, add mode=switch:

just mode=switch nixos-rebuild <host>

This will add a new boot record to the bootloader.

Files in $HOME are defined via Home Manager, which can be invoked separately:

just home <host> switch

Notes

Fonts

Purpose	Name	Comment
Code	FiraCode Nerd Font
UI	Cabin	Easy on eyes, good default
UI	Recursive	Eye candy, catchy

It's necessary to rebuild fonts cache in order to observe live changes after modifying the config:

fc-cache -rf

Custom modules

• modules/ contains some custom modules. They are:

• modules/home-manager/nebius-cli.nix - Nebius CLI

Debugging mime-type

XDG_UTILS_DEBUG_LEVEL=2 xdg-mime query filetype foo.pdf

XDG_UTILS_DEBUG_LEVEL=2 xdg-mime query default application/pdf

fd evince.desktop /