My NixOS config

Work in progress 🚧.

Currently running on three hosts: Medion (Intel Notebook; Nvidia GPU), Loki (AMD Workstation; AMD GPU), and WSL

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⚙️ Structure

Inspired by Misterio77, but using flake-parts.

• flake.nix: Entrypoint.
• hosts: NixOS Configurations, rebuild via nh os switch -H <hostname> after bootstrapping.
  • common: Shared configurations imported by the host configurations.
    • core: Core configurations that every host requires.
    • optional: Optional configurations that only some hosts require
      • Optional modules are all implemented via toggleable options. These can easily be set for each host.
  • Loki: Gaming PC / Workstation - 32GB RAM, R7 5800X3D , RX 6800XT.
  • Medion: Notebook: Medion Erazer X7853 - 16GB RAM, i7-7700HQ, GTX 1070M.
  • Fujitsu: Homelab: Fujitsu Esprimo 556/2 - 32GB RAM, G4560T (Not running NixOS yet).
  • Wsl: Windows subsystem for Linux: Contains all core modules and mostly work related extras.
• home: Home Manager configuration. Via the Home Manager NixOS module.
  • Liqyid: Currently the only user I need. Sudoer.
    • common: Shared configurations imported by the user-specific host configurations.
      • core: Core configurations that every host running that user requires.
      • optional: Optional configurations that only some hosts running that user require.
        • Optional modules are all implemented via toggleable options. These can easily be set in each host-specific file in the user directory.
• packages: Place for patched binaries / packages not available in nixpkgs or dedicated flakes.
  • saint: Patched binary to perform "Significance Analysis of INTeractome" PMID: 24513533.
  • python/cellpose: A generalist algorithm for cellular segmentation (CLI only, with CUDA support) PMID: 39939718.
  • R/nvimcom: R package allowing nvim <-> R communication. Used in my nvim config.
• devshells: Place for project / analysis or framework specific nix shells.
• overlays: Custom overlays applied to nixpkgs.
• lib: Nix functions and constants used in different parts of the flake.
• formatting: Setting formatter and pre-commit-checks for the flake.

🖥️ Compositor & GUI

Uses the hyprland window management ecosystem. Uses an Astal/Ags setup inspired by fufexan's Agsv1 config. Wallpaper-based color scheme generation using Material colors via matugen and a custom rust cli utility to set light/dark theme and scheme based on main color HCT space. Astal, GTK, hyprland and hyprlock are dynamically themed in a wallpaper-matched light or dark theme.

📷 Screenshots

🌚 Host: Medion (single monitor)

Dark

🌞 Host: Loki - floating bar (dual monitor)

Light

Yeah sorry, no light terminal colors. That just hurts my eyes.

🧑‍💻 Neovim

Custom neovim based on kickstart.nvim. Uses nixCats for plugin and dependency management and lze for plugin lazy-loading. Integrated with tmux. If you want to check out just this nvim distribution run:

nix run github:Neurarian/NixOS-config#nixCats

But be aware that it ships all tools necessary for C, Rust, JS, and R development by default which do take up a lot of space. If you would like to test a more stripped down version for use with nix, lua, bash, and markdown only: try #nixCatsStripped instead.

✨ Main Features

• 🐱 nixCats-nvim as an interface for managing installation of plugins and dependencies the Nix way, all while staying with lua for configuration.
• 🦥 Nix friendly, dead simple plugin lazy-loading with lze.
• 💬 Modern and fast autocompletion with blink.cmp & LuaSnip.
• 🌎 Navigation to everywhere in the project with just a couple of keypresses using the snacks.nvim picker.
• 🦦 Nix friendly syntax highlighting of nix-embedded code with otter.nvim & nvim-treesitter.
• ♻️ Integration with git via lazygit.nvim & gitsigns.nvim.
• 🔌 Running the amazing nixd LSP, making configuration a breeze.
• 🐞 Integrated debugger via nvim-dap.
• 🎨 Harmonizing pastel aesthetics across the entire terminal via Catppuccin Dark Mocha and a pretty snacks.nvim dashboard.

🔒 Secret Provisioning

Seamless setup for management of secrets within NixOS with sops-nix. Storing secrets such as wifi creds, github tokens, SSH keys, etc. in an age encrypted .yaml file decrypted during activation time.

🔌 Plug & Play VFIO GPU Passthrough

Includes a custom NixOS module that generates a single-file qemu hook making (single) GPU passthrough via detaching and reattaching of the respective kernel drivers on NixOS dead simple, e.g.:

#hosts/<hostname>/default.nix
{
  inputs,
  ...
}:
#...
{
  imports = [
    #...
    ../common/optional
    #...
  ];
  #...
  # VFIO: single GPU passthrough for 6800XT
  libvirt = {
    enable = true;
    qemuHook = {
      enable = true;
      vmName = "win10";
      pciDevices = [
        "pci_0000_0b_00_0"
        "pci_0000_0b_00_1"
        "pci_0000_0b_00_2"
      ];
      gpuModule = "amdgpu";
      vfioModule = "vfio-pci";
    };
  };
}

💿 Software List

Type	Software
Window Manager	hyprland
Bar	Astal
App Launcher	Astal
Resource Monitor	Mission Center + CoolerControl
File Manager	nautilus
Lockscreen	hyprlock
Logout Menu	Astal
Browser	custom hardened Firefox + Zen
Media Player	mpd + Astal + YouTube Music
Gaming	Steam / Gamescope
Screenshot Software	grimblast
Clipboard	wl-clipboard + cliphist
Terminal Emulator	WezTerm
Terminal Multiplexer	tmux
Shell	zsh + Starship
Editor	neovim
Secret Provisioning	sops-nix
Fonts	Jetbrains Mono + FiraCode
Color Scheme	Catppuccin Mocha + matugen
Cursor	Catppuccin-Macchiato-Dark

Show planned

Type	Software
Ephemeral Root Storage	Impermanence
Notes	Obsidian
Bar & Widgets	Migrate to AGS v2
VFIO	Does not work on Notebook Nvidia GPU yet

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