Chaotic's Nyx

Nix flake for "too much bleeding-edge" and unreleased packages (e.g., mesa_git, linux_cachyos, firefox_nightly, sway_git, gamescope_git). And experimental modules (e.g., HDR, duckdns).

From the Chaotic Linux User Group (LUG), the same one that maintains Chaotic-AUR! 🧑🏻‍💻

The official source-code repository is available as "chaotic-cx/nyx" at GitHub.

PLEASE AVOID POSTING ISSUES IN NIXOS' MATRIX, DISCOURSE, DISCORD, ETC. USE OUR REPO'S ISSUES, TELEGRAM GROUP, OR #chaotic-nyx:ubiquelambda.dev ON MATRIX INSTEAD.

News
How to use it
Lists of options and packages
Notes
Why am I building a kernel? Basic cache troubleshooting

News

A news channel can be found on Telegram.

How to use it

On NixOS unstable

This tutorial does not apply for users using NixOS 24.11 and other stable channels. This tutorial is for unstable users.

We recommend integrating this repo using Flakes:


# flake.nix
{
  description = "My configuration";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    chaotic.url = "github:chaotic-cx/nyx/nyxpkgs-unstable"; # IMPORTANT
  };

  outputs = { nixpkgs, chaotic, ... }: {
    nixosConfigurations = {
      hostname = nixpkgs.lib.nixosSystem { # Replace "hostname" with your system's hostname
        system = "x86_64-linux";
        modules = [
          ./configuration.nix
          chaotic.nixosModules.default # IMPORTANT
        ];
      };
    };
  };
}

In your configuration.nix enable the packages and options that you prefer:


# configuration.nix
{ pkgs, ... }:
{
  environment.systemPackages = [ pkgs.lan-mouse_git ];
  chaotic.mesa-git.enable = true;
}

On NixOS stable

This tutorial does not apply for users using NixOS unstable channel. This tutorial is for 24.11 and other stable channels.

You won't have access to all the modules and options available to unstable users, as those are prone to breaking due to the divergence between the channels. But you'll have access to all packages, the cache, and the registry.

We recommend integrating this repo using Flakes:


# flake.nix
{
  description = "My configuration";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.11";
    chaotic.url = "github:chaotic-cx/nyx/nyxpkgs-unstable";
  };

  outputs = { nixpkgs, chaotic, ... }: {
    nixosConfigurations = {
      hostname = nixpkgs.lib.nixosSystem { # Replace "hostname" with your system's hostname
        system = "x86_64-linux";
        modules = [
          ./configuration.nix # Your system configuration.
          chaotic.nixosModules.nyx-cache
          chaotic.nixosModules.nyx-overlay
          chaotic.nixosModules.nyx-registry
        ];
      };
    };
  };
}

In your configuration.nix enable the packages that you prefer:


# configuration.nix
{ pkgs, ... }:
{
  environment.systemPackages = [ pkgs.lan-mouse_git ];
  boot.kernelPackages = pkgs.linuxPackages_cachyos;
}

On Home-Manager

This method is for home-manager setups without NixOS.

We recommend integrating this repo using Flakes:


# flake.nix
{
  description = "My configuration";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    chaotic.url = "github:chaotic-cx/nyx/nyxpkgs-unstable"; # IMPORTANT
    home-manager = {
      url = "github:nix-community/home-manager";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs = { nixpkgs, chaotic, ... }: {
    # ... other outputs
    homeConfigurations = {
      # ... other configs
      configName = home-manager.lib.homeManagerConfiguration { # Replace "configName" with a significant unique name
        pkgs = nixpkgs.legacyPackages.x86_64-linux;
        modules = [
          ./home-manager/default.nix
          chaotic.homeManagerModules.default # IMPORTANT
        ];
      };
    };
  };
}

In your home-manager/default.nix add a nix.package, and enable the desired packages:


# configuration.nix
{ pkgs, ... }:
{
  nix.package = pkgs.nix;
  home.packages = [ pkgs.lan-mouse_git ];
}

Running packages (without installing)

Besides using our module/overlay, you can run packages (without installing them) using:


nix run github:chaotic-cx/nyx/nyxpkgs-unstable#firefox_nightly

Binary Cache notes

You'll get the binary cache added to your configuration as soon as you add our default module. We do this automatically, so we can gracefully update the cache's address and keys without prompting you for manual work.

If you dislike this behavior for any reason, you can disable it with chaotic.nyx.cache.enable = false.

Remember: If you want to fetch derivations from our cache, you'll need to enable our module and rebuild your system before adding these derivations to your configuration.

Commands like nix run ..., nix develop ..., and others, when using our flake as input, will ask you to add the cache interactively when missing from your user's nix settings.

If you want to use the cache right from the installation media, install your system using nixos-install --flake /mnt/etc/nixos#mymachine --option 'extra-substituters' 'https://chaotic-nyx.cachix.org/' --option extra-trusted-public-keys "chaotic-nyx.cachix.org-1:HfnXSw4pj95iI/n17rIDy40agHj12WfF+Gqk6SonIT8=" (replace mymachine with your new host's name).

We offer cache for x86_64-linux, aarch64-linux, and aarch64-darwin.

FlakeHub notes

Add chaotic to your flake.nix, make sure to use the rolling *.tar.gz to keep using the latest packages:


# flake.nix
{
  # ... description
  inputs = {
    # ... nixpkgs, home-manager, etc
    chaotic.url = "https://flakehub.com/f/chaotic-cx/nyx/*.tar.gz";
  };
  # ... outputs
}

Then follow one of the guides above.

Using sched-ext schedulers

From version 6.12 onwards, sched-ext support is officially available on the upstream kernel. You can use the latest kernel (pkgs.linuxPackages_latest) or our provided CachyOS kernel (pkgs.linuxPackages_cachyos).

Just add this to your configuration:


# configuration.nix
{
  boot.kernelPackages = pkgs.linuxPackages_cachyos;
  services.scx.enable = true; # by default uses scx_rustland scheduler
}

Then, reboot with the new configuration, check if the scheduler is running:


╰─λ systemctl status scx.service

If this is not working, check if the current kernel support sched-ext feature.


╰─λ ls /sys/kernel/sched_ext/
enable_seq  hotplug_seq  nr_rejected  root  state  switch_all

You can also manually start a scheduler like:


╰─λ sudo scx_rusty
21:38:53 [INFO] CPUs: online/possible = 24/32
21:38:53 [INFO] DOM[00] cpumask 00000000FF03F03F (20 cpus)
21:38:53 [INFO] DOM[01] cpumask 0000000000FC0FC0 (12 cpus)
21:38:53 [INFO] Rusty Scheduler Attached

You can choose a different scheduler too.


# configuration.nix
{
  services.scx.scheduler = "scx_rusty";
}

We also provide a git version of scx to stay up to date on the latest features.


# configuration.nix
{
  services.scx.package = pkgs.scx_git.full;
}

There are other scx_* binaries for you to play with, or head to github.com/sched-ext/scx for instructions on how to write one of your own.

Using with read-only pkgs

If you use nixpkgs.nixosModules.readOnlyPkgs in your setup, you need to disable our overlay module, and import the cache-friendly overlay directly instead.


# flake.nix
{
  # ... description, inputs
  outputs = { nixpkgs, chaotic, ... }: {
    nixosConfigurations = {
      # ... other systems
      hostname = nixpkgs.lib.nixosSystem { # Replace "hostname" with your system's hostname
        modules = [
          nixpkgs.nixosModules.readOnlyPkgs
          # ... ./configuration.nix, ./hardware-configuration.nix, etc
          {
            nixpkgs.pkgs = import nixpkgs {
              system = "x86_64-linux";
              config = { allowUnfree = true; };
              overlays = [ chaotic.overlays.cache-friendly ]; # IMPORTANT
            };
            chaotic.nyx.overlay.enable = false; # IMPORTANT
          }
          chaotic.nixosModules.default # IMPORTANT
        ];
      };
    };
  };
}

Using with Jovian

We provide binary cache for most packages in Jovian NixOS.

Remember to read all our Binary Cache notes, and you must follow jovian through chaotic to avoid hash mismatches:


# flake.nix
{
    # ... description
    inputs = {
      # ... nixpkgs, home-manager, etc
      chaotic.url = "github:chaotic-cx/nyx/nyxpkgs-unstable";
      jovian.follows = "chaotic/jovian";
    };
    # ... outputs
}

Lists of options and packages

Built and cached against github:nixos/nixpkgs/d89fc19e405cb2d55ce7cc114356846a0ee5e956 (20250510191037Z).

Packages
NixOS Options
Home-Manager Options

Packages

Name	Version	Description
`alacritty_git`	`unstable-20250502220522-def47a5`	Cross-platform, GPU-accelerated terminal emulator https://github.com/alacritty/alacritty
`ananicy-rules-cachyos_git`	`unstable-20250319200601-99693d5`	CachyOS' ananicy-rules meant to be used with ananicy-cpp https://github.com/CachyOS/ananicy-rules
`applet-window-title`	`0.5`	Plasma 6 applet that shows the application title and icon for active window https://github.com/psifidotos/applet-window-title
`appmenu-gtk3-module`	`0.7.6`	Port of the Unity GTK 3 Module
`beautyline-icons`	`unstable-20240504163440-e13e5fa`	BeautyLine icon theme mixed with Sweet icons https://gitlab.com/garuda-linux/themes-and-settings/artwork/beautyline
`bpftools_full`	`6.14.6`	Debugging/program analysis tools for the eBPF subsystem https://github.com/libbpf/bpftool
`busybox_appletless`	`1.36.1`	Tiny versions of common UNIX utilities in a single small executable (without applets' symlinks) https://busybox.net/
`bytecode-viewer_git`	`unstable-20250426165501-6d823ba`	An advanced yet user friendly Java reverse engineering suite https://bytecodeviewer.com/
`conduwuit_git`	`unstable-20250409033854-d8311a5`	Matrix homeserver written in Rust, forked from conduit https://conduwuit.puppyirl.gay/
`discord-krisp`	`0.0.94`	All-in-one cross-platform voice and text chat for gamers https://discordapp.com/
`distrobox_git`	`unstable-20250430083031-7c0c1e5`	Wrapper around podman or docker to create and start containers https://distrobox.it/
`dr460nized-kde-theme`	`unstable-20250303165954-23d86f1`	The default Garuda dr460nized theme https://gitlab.com/garuda-linux/themes-and-settings/settings/garuda-dr460nized
`evil-helix_git`	`unstable-20250422195441-3d33121`	Post-modern modal text editor, with vim keybindings https://github.com/usagi-flow/evil-helix
`firedragon`	`11.26.0-1`	Floorp fork build using custom branding & settings https://firedragon.garudalinux.org
`firedragon-unwrapped`	`11.26.0-1`	Floorp fork build using custom branding & settings https://firedragon.garudalinux.org
`firefox-unwrapped_nightly`	`140.0a1`	A web browser built from Firefox Nightly source tree http://www.mozilla.com/en-US/firefox/
`firefox_nightly`	`140.0a1`	A web browser built from Firefox Nightly source tree http://www.mozilla.com/en-US/firefox/
`gamescope-wsi32_git`	`unstable-20250505032817-3ab24ca`	SteamOS session compositing window manager https://github.com/ValveSoftware/gamescope
`gamescope-wsi_git`	`unstable-20250505032817-3ab24ca`	SteamOS session compositing window manager https://github.com/ValveSoftware/gamescope
`gamescope_git`	`unstable-20250505032817-3ab24ca`	SteamOS session compositing window manager https://github.com/ValveSoftware/gamescope
`helix_git`	`unstable-20250510184846-63a1a94`	Post-modern modal text editor https://helix-editor.com
`jovian-chaotic.decky-loader`	`3.1.5`	A plugin loader for the Steam Deck https://github.com/SteamDeckHomebrew/decky-loader
`jovian-chaotic.decky-loader-prerelease`	`3.1.5`	A plugin loader for the Steam Deck https://github.com/SteamDeckHomebrew/decky-loader
`jovian-chaotic.galileo-mura`	`0.9`	https://github.com/Jovian-Experiments/galileo-mura
`jovian-chaotic.gamescope`	`3.16.4`	SteamOS session compositing window manager https://github.com/ValveSoftware/gamescope
`jovian-chaotic.gamescope-session`	`3.16.4-3`	-
`jovian-chaotic.gamescope-wsi`	`3.16.4`	SteamOS session compositing window manager https://github.com/ValveSoftware/gamescope
`jovian-chaotic.inputplumber`	`0.57.0`	Open source input router and remapper daemon for Linux https://github.com/ShadowBlip/InputPlumber
`jovian-chaotic.jovian-greeter`	`-`	-
`jovian-chaotic.jovian-hardware-survey`	`-`	-
`jovian-chaotic.jovian-steam-protocol-handler`	`-`	-
`jovian-chaotic.jovian-stubs`	`-`	-
`jovian-chaotic.jovian-updater-logo-helper`	`-`	-
`jovian-chaotic.jupiter-dock-updater-bin`	`20250220.02`	-
`jovian-chaotic.jupiter-fan-control`	`20240523.3`	Steam Deck (Jupiter) userspace fan controller
`jovian-chaotic.jupiter-hw-support`	`20250501.0`	Steam OS's generic “hardware support” package. This package contains the hardware-agnostic files from the `jupiter-hw-support` package. For themes, as well as unfree firmware, see the `steamdeck-theme` and `steamdeck-firmware` packages.
`jovian-chaotic.linux-firmware-jupiter`	`20250311.1`	Binary firmware collection packaged by kernel.org https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git
`jovian-chaotic.linux_jovian`	`6.11.11-valve13`	The Linux kernel (with patches: bridge-stp-helper, request-key-helper, export-rt-sched-migrate) https://www.kernel.org/
`jovian-chaotic.mangohud`	`0.8.1.r49`	Vulkan and OpenGL overlay for monitoring FPS, temperatures, CPU/GPU load and more https://github.com/flightlessmango/MangoHud
`jovian-chaotic.mesa-radeonsi-jupiter`	`25.0.5`	Open source 3D graphics library https://www.mesa3d.org/
`jovian-chaotic.mesa-radv-jupiter`	`24.3.0.steamos-24.11.9`	-
`jovian-chaotic.opensd`	`unstable-2022-12-19`	Userspace driver for Steam Deck input
`jovian-chaotic.powerbuttond`	`3.1`	Steam Deck power button daemon
`jovian-chaotic.sdgyrodsu`	`2.1`	Cemuhook DSU server for the Steam Deck Gyroscope https://github.com/kmicki/SteamDeckGyroDSU
`jovian-chaotic.steam`	`-`	Steam dependencies (dummy package, do not use) https://store.steampowered.com/
`jovian-chaotic.steam-unwrapped`	`1.0.0.82`	Digital distribution platform https://store.steampowered.com/
`jovian-chaotic.steam_notif_daemon`	`1.0.1`	Steam notification daemon
`jovian-chaotic.steamdeck-bios-fwupd`	`-`	Steam Deck BIOS for fwupd
`jovian-chaotic.steamdeck-dsp`	`0.61`	Steamdeck Audio Processing
`jovian-chaotic.steamdeck-firmware`	`20250501.0`	Steam Deck BIOS and controller firmware
`jovian-chaotic.steamdeck-hw-theme`	`20250501.0`	Steam Deck themes (base)
`jovian-chaotic.steamos-manager`	`25.4.1`	-
`jovian-chaotic.steamos-polkit-helpers`	`20250501.0`	-
`jovian-chaotic.wakehook`	`2.1`	SteamOS CEC power management daemon
`jovian-chaotic.wireplumber-jupiter`	`0.5.7`	Modular session / policy manager for PipeWire https://pipewire.org
`jujutsu_git`	`unstable-20250510153646-d08f19d`	Git-compatible DVCS that is both simple and powerful https://github.com/jj-vcs/jj
`lan-mouse_git`	`unstable-20250402003949-b8063a8`	Software KVM switch for sharing a mouse and keyboard with multiple hosts through the network https://github.com/feschber/lan-mouse
`latencyflex-vulkan`	`unstable-2023-07-03`	Vulkan Layer for LatencyFleX https://github.com/ishitatsuyuki/LatencyFleX
`libbpf_git`	`unstable-20250429183337-374f780`	Library for loading eBPF programs and reading and manipulating eBPF objects from user-space https://github.com/libbpf/libbpf
`libdrm32_git`	`b65d6ed`	Direct Rendering Manager library and headers https://gitlab.freedesktop.org/mesa/drm
`libdrm_git`	`b65d6ed`	Direct Rendering Manager library and headers https://gitlab.freedesktop.org/mesa/drm
`libportal_git`	`unstable-20250328122118-796053d`	Flatpak portal library https://github.com/flatpak/libportal
`linuxPackages_cachyos`	`6.14.6+Cfa63177+Pd9bfde3`	Kernel and modules for Linux EEVDF-BORE scheduler Kernel by CachyOS with other patches and improvements
`linuxPackages_cachyos-hardened`	`6.13.12+Caa6c9fb+Pc933702`	Kernel and modules for Linux EEVDF-BORE scheduler Kernel by CachyOS with other patches and improvements
`linuxPackages_cachyos-lto`	`6.14.6+Cfa63177+Pd9bfde3`	Kernel and modules for Linux EEVDF-BORE scheduler Kernel by CachyOS built with LLVM and Thin LTO
`linuxPackages_cachyos-rc`	`6.15-rc5+C9f82f52+P2c0ec4a`	Kernel and modules for Linux EEVDF-BORE scheduler Kernel by CachyOS with other patches and improvements
`linuxPackages_cachyos-server`	`6.14.6+Cfa63177+Pd9bfde3`	Kernel and modules for Linux EEVDF scheduler Kernel by CachyOS targeted for Servers
`linux_cachyos`	`6.14.6`	The Linux kernel (with patches: 0001-cachyos-base-all.patch, 0001-bore-cachy.patch) https://www.kernel.org/
`linux_cachyos-hardened`	`6.15-rc5`	The Linux kernel (with patches: 0001-cachyos-base-all.patch, 0001-bore-cachy.patch) https://www.kernel.org/
`linux_cachyos-rc`	`6.15-rc5`	The Linux kernel (with patches: 0001-cachyos-base-all.patch, 0001-bore-cachy.patch) https://www.kernel.org/
`linux_cachyos-server`	`6.14.6`	The Linux kernel (with patches: 0001-cachyos-base-all.patch) https://www.kernel.org/
`luxtorpeda`	`72.0.0`	Steam Play compatibility tool to run games using native Linux engines https://github.com/luxtorpeda-dev/luxtorpeda
`mangohud32_git`	`unstable-20250510153825-9004a14`	Vulkan and OpenGL overlay for monitoring FPS, temperatures, CPU/GPU load and more https://github.com/flightlessmango/MangoHud
`mangohud_git`	`unstable-20250510153825-9004a14`	Vulkan and OpenGL overlay for monitoring FPS, temperatures, CPU/GPU load and more https://github.com/flightlessmango/MangoHud
`mesa32_git`	`bb61a7`	Open source 3D graphics library https://www.mesa3d.org/
`mesa_git`	`bb61a7`	Open source 3D graphics library https://www.mesa3d.org/
`mpv-vapoursynth`	`-`	General-purpose media player, fork of MPlayer and mplayer2 (includes vapoursynth-mvtools) https://mpv.io
`mwc_git`	`unstable-20250316235640-33b4968`	tiling wayland compositor based on wlroots. https://github.com/dqrk0jeste/mwc
`niri_git`	`unstable-20250510204300-89b7423`	Scrollable-tiling Wayland compositor https://github.com/YaLTeR/niri
`nix-top_abandoned`	`0.3.0`	Tracks what nix is building https://github.com/samueldr/nix-top
`nordvpn`	`3.19.2`	CLI client for NordVPN https://www.nordvpn.com
`nss_git`	`unstable-20250505100732-63eda55`	Set of libraries for development of security-enabled client and server applications https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS
`nut_git`	`unstable-20250509165021-093e44b`	Network UPS Tools https://networkupstools.org/
`nyx-generic-git-update`	`-`	Generic update-script for bleeding-edge GIT Nix derivations.
`nyxUtils`	`-`	Pack of functions that are useful for Chaotic-Nyx and might become useful for you too
`openmohaa`	`0.81.1`	Open re-implementation of Medal of Honor: Allied Assault https://github.com/openmoh/openmohaa
`openmohaa_git`	`unstable-20250509212928-0ea8347`	Open re-implementation of Medal of Honor: Allied Assault https://github.com/openmoh/openmohaa
`openrgb_git`	`unstable-20250510005638-478cf4e`	Open source RGB lighting control https://gitlab.com/CalcProgrammer1/OpenRGB
`openvr_git`	`unstable-20240326235357-ae46a8d`	API and runtime that allows access to VR hardware from multiple vendors without requiring that applications have specific knowledge of the hardware they are targeting https://github.com/ValveSoftware/openvr
`pkgsx86_64_v2`	`-`	Nixpkgs + Chaotic-Nyx packages built for the x86-64-v2 microarchitecture.
`pkgsx86_64_v3`	`-`	Nixpkgs + Chaotic-Nyx packages built for the x86-64-v3 microarchitecture.
`pkgsx86_64_v4`	`-`	Nixpkgs + Chaotic-Nyx packages built for the x86-64-v4 microarchitecture.
`proton-ge-custom`	`9.27`	Compatibility tool for Steam Play based on Wine and additional components https://github.com/GloriousEggroll/proton-ge-custom
`pwvucontrol_git`	`unstable-20250323193748-a3e7a77`	Pipewire Volume Control https://github.com/saivert/pwvucontrol
`qtile-extras_git`	`0.29.99`	Extra modules and widgets for the Qtile tiling window manager https://github.com/elParaguayo/qtile-extras
`qtile-module_git`	`0.29.0.99`	Small, flexible, scriptable tiling window manager written in Python http://www.qtile.org/
`qtile_git`	`0.29.0.99`	Small, flexible, scriptable tiling window manager written in Python http://www.qtile.org/
`river_git`	`unstable-20250329144456-46f77f3`	Dynamic tiling wayland compositor https://codeberg.org/river/river
`scx-full_git`	`unstable-20250512093032-cd952a7`	Sched-ext C and Rust userspace schedulers https://github.com/sched-ext/scx
`scx_git.cscheds`	`unstable-20250512093032-cd952a7`	Sched-ext C userspace schedulers https://github.com/sched-ext/scx
`scx_git.full`	`unstable-20250512093032-cd952a7`	Sched-ext C and Rust userspace schedulers https://github.com/sched-ext/scx
`scx_git.rustscheds`	`unstable-20250512093032-cd952a7`	Sched-ext Rust userspace schedulers https://github.com/sched-ext/scx
`sdl_git`	`unstable-20250510195012-84308e7`	Cross-platform development library https://libsdl.org
`shadps4_git`	`unstable-20250507215016-1aa7eb8`	Early in development PS4 emulator https://github.com/shadps4-emu/shadPS4
`spirv-headers_git`	`unstable-20250507154058-6d0784e`	Machine-readable components of the Khronos SPIR-V Registry https://github.com/KhronosGroup/SPIRV-Headers
`sway-unwrapped_git`	`unstable-20250508172035-8d3a52a`	I3-compatible tiling Wayland compositor https://swaywm.org
`sway_git`	`unstable-20250508172035-8d3a52a`	I3-compatible tiling Wayland compositor https://swaywm.org
`swaylock-plugin_git`	`unstable-20250423132811-63e83bf`	Screen locker for Wayland https://github.com/swaywm/swaylock
`telegram-desktop-unwrapped_git`	`unstable-20250424070656-635ed02`	Telegram Desktop messaging app https://desktop.telegram.org/
`telegram-desktop_git`	`unstable-20250424070656-635ed02`	Telegram Desktop messaging app https://desktop.telegram.org/
`tg-owt_git`	`unstable-20250501124727-c4192e8`	Fork of Google's webrtc library for telegram-desktop https://github.com/desktop-app/tg_owt
`torzu_git`	`unstable-20250422-fd90833`	The TOR branch of an experimental Nintendo Switch emulator written in C++ http://vub63vv26q6v27xzv2dtcd25xumubshogm67yrpaz2rculqxs7jlfqad.onion/torzu-emu/torzu
`vulkanPackages_latest.gfxreconstruct`	`1.4.309.0`	Graphics API Capture and Replay Tools https://github.com/LunarG/gfxreconstruct/
`vulkanPackages_latest.glslang`	`1.4.309.0`	Khronos reference front-end for GLSL and ESSL https://github.com/KhronosGroup/glslang
`vulkanPackages_latest.spirv-cross`	`1.4.313.0`	Tool designed for parsing and converting SPIR-V to other shader languages https://github.com/KhronosGroup/SPIRV-Cross
`vulkanPackages_latest.spirv-headers`	`1.4.313.0`	Machine-readable components of the Khronos SPIR-V Registry https://github.com/KhronosGroup/SPIRV-Headers
`vulkanPackages_latest.spirv-tools`	`1.4.313.0`	SPIR-V Tools project provides an API and commands for processing SPIR-V modules https://github.com/KhronosGroup/SPIRV-Tools
`vulkanPackages_latest.vulkan-extension-layer`	`1.4.313.0`	Layers providing Vulkan features when native support is unavailable https://github.com/KhronosGroup/Vulkan-ExtensionLayer/
`vulkanPackages_latest.vulkan-headers`	`1.4.314`	Vulkan Header files and API registry https://www.lunarg.com
`vulkanPackages_latest.vulkan-loader`	`1.4.315`	LunarG Vulkan loader https://www.lunarg.com
`vulkanPackages_latest.vulkan-tools`	`1.4.314`	Khronos official Vulkan Tools and Utilities https://github.com/KhronosGroup/Vulkan-Tools
`vulkanPackages_latest.vulkan-tools-lunarg`	`1.4.313.0`	LunarG Vulkan Tools and Utilities https://github.com/LunarG/VulkanTools
`vulkanPackages_latest.vulkan-utility-libraries`	`1.4.314`	Set of utility libraries for Vulkan https://github.com/KhronosGroup/Vulkan-Utility-Libraries
`vulkanPackages_latest.vulkan-validation-layers`	`1.4.314`	Official Khronos Vulkan validation layers https://github.com/KhronosGroup/Vulkan-ValidationLayers
`vulkanPackages_latest.vulkan-volk`	`1.4.313.0`	Meta loader for Vulkan API https://github.com/zeux/volk
`wayland-protocols_git`	`unstable-20250505104216-eda9bb4`	Wayland protocol extensions https://gitlab.freedesktop.org/wayland/wayland-protocols
`wayland-scanner_git`	`1.23.1`	C code generator for Wayland protocol XML files https://wayland.freedesktop.org/
`wayland_git`	`unstable-20250315231207-6137c8c`	Core Wayland window system code and protocol https://wayland.freedesktop.org/
`wlroots_git`	`unstable-20250508101357-2420bfe`	Modular Wayland compositor library https://gitlab.freedesktop.org/wlroots/wlroots/
`xdg-desktop-portal-wlr_git`	`unstable-20250405165139-dfd2887`	xdg-desktop-portal backend for wlroots https://github.com/emersion/xdg-desktop-portal-wlr
`yt-dlp_git`	`unstable-20250510232253-cbcfe63`	Command-line tool to download videos from YouTube.com and other sites (youtube-dl fork) https://github.com/yt-dlp/yt-dlp/
`zed-editor-fhs_git`	`unstable-20250430150152-632f08d`	Wrapped variant of zed-editor which launches in a FHS compatible environment. Should allow for easy usage of extensions without nix-specific modifications. https://zed.dev
`zed-editor_git`	`unstable-20250430150152-632f08d`	High-performance, multiplayer code editor from the creators of Atom and Tree-sitter https://zed.dev
`zfs_cachyos`	`2.3.2`	ZFS Filesystem Linux Userspace Tools https://github.com/openzfs/zfs
`zon2nix_zig_0_13`	`0.1.2`	Convert the dependencies in `build.zig.zon` to a Nix expression https://github.com/nix-community/zon2nix

NixOS Options

Key	Default	Description
`chaotic.appmenu-gtk3-module.enable`	`false`	Sets the proper environment variable to use appmenu-gtk3-module. Example: `true`
`chaotic.conduwuit.enable`	`false`	Whether to enable conduwuit service. Example: `true`
`chaotic.conduwuit.extraEnvironment`	`{ }`	Extra Environment variables to pass to the conduwuit server. Example: `{ RUST_BACKTRACE = "yes"; }`
`chaotic.conduwuit.group`	`"conduwuit"`	The group {command}`conduwuit` is run as.
`chaotic.conduwuit.package`	`pkgs.conduwuit_git`	The conduwuit_git package to use.
`chaotic.conduwuit.settings`	`{ }`	Generates the conduwuit.toml configuration file. Refer to for details on supported values.
`chaotic.conduwuit.user`	`"conduwuit"`	The user {command}`conduwuit` is run as.
`chaotic.duckdns.certs.enable`	`false`	Whether to enable generate HTTPS cert via ACME/Let's Encrypt. Example: `true`
`chaotic.duckdns.certs.group`	`"acme"`	Group account under which the activation runs.
`chaotic.duckdns.certs.httpPort`	`80`	Port number.
`chaotic.duckdns.certs.useHttpServer`	`false`	Whether to enable use Lego's built-in HTTP server instead a request to DuckDNS. Example: `true`
`chaotic.duckdns.domain`	`N/A`	Full domain to be updated, including the TLD.
`chaotic.duckdns.enable`	`false`	Whether to enable DuckDNS config. Example: `true`
`chaotic.duckdns.environmentFile`	`"/etc/duckdns-updater/envs"`	Environment file from systemd, ensure it is set to 600 permissions. Must contain DUCKDNS_TOKEN entry.
`chaotic.duckdns.ipv6.device`	`"eth0"`	Device to get IPv6.
`chaotic.duckdns.ipv6.enable`	`false`	Whether to enable enable IPv6. Example: `true`
`chaotic.duckdns.onCalendar`	`"*:0/5"`	How often the DNS entry is updated. The format is described in {manpage}`systemd.time(7)`. Example: `"hourly"`
`chaotic.hdr.enable`	`false`	Whether to enable AMD-HDR as seen in https://lore.kernel.org/amd-gfx/20230810160314.48225-1-mwen@igalia.com/ . Example: `true`
`chaotic.hdr.specialisation.enable`	`true`	Isolates the changes in a specialisation. Example: `false`
`chaotic.hdr.wsiPackage`	`pkgs.gamescope-wsi`	Gamescope WSI package to use Example: `pkgs.gamescope-wsi_git`
`chaotic.mesa-git.enable`	`false`	Whether to use latest Mesa drivers. WARNING: It will break NVIDIA's libgbm, don't use with NVIDIA Optimus setups. Example: `true`
`chaotic.mesa-git.extraPackages`	`[ ]`	Additional packages to add to OpenGL drivers. This can be used to add OpenCL drivers, VA-API/VDPAU drivers etc. WARNING: Don't use any of the `mesa.`, replace with `pkgs.mesa_git.`. Example: `with pkgs; [ mesa_git.opencl intel-media-driver intel-ocl vaapiIntel ]`
`chaotic.mesa-git.extraPackages32`	`[ ]`	Additional packages to add to 32-bit OpenGL drivers on 64-bit systems. WARNING: Don't use any of the `mesa.`, replace with `pkgs.mesa32_git.`. Example: `with pkgs.pkgsi686Linux; [ pkgs.mesa32_git.opencl intel-media-driver vaapiIntel ]`
`chaotic.mesa-git.fallbackSpecialisation`	`true`	Whether to add a specialisation with stable Mesa. Recommended. Example: `false`
`chaotic.mesa-git.replaceBasePackage`	`false`	Whether to impurely replace `mesa.out` with `mesa_git.out`. Might increase compatibility. But you'll need `--impure` to build your configuration. Example: `false`
`chaotic.nordvpn.enable`	`false`	Whether to enable the NordVPN daemon. Note that you'll have to set `networking.firewall.checkReversePath = false;`, add UDP 1194 and TCP 443 to the list of allowed ports in the firewall and add your user to the "nordvpn" group (`users.users..extraGroups`).
`chaotic.nyx.cache.enable`	`true`	Whether to add Chaotic-Nyx's binary cache to settings. Example: `false`
`chaotic.nyx.nixPath.enable`	`true`	Whether to add Chaotic-Nyx to `nix.nixPath`. Example: `false`
`chaotic.nyx.overlay.enable`	`true`	Whether to add Chaotic-Nyx's overlay to system's pkgs. Example: `false`
`chaotic.nyx.overlay.flakeNixpkgs.config`	`pkgs.config`	Matches `nixpkgs.config` from the configuration of the Nix Packages collection. Example: `{ allowBroken = true; allowUnfree = true; }`
`chaotic.nyx.overlay.onTopOf`	`"flake-nixpkgs"`	Build Chaotic-Nyx's packages based on nyx's flake flakes or the system's pkgs. Enum: `one of "flake-nixpkgs", "user-pkgs"` Example: `"user-pkgs"`
`chaotic.nyx.registry.enable`	`true`	Whether to add Chaotic-Nyx to `nix.registry`. Example: `false`
`chaotic.owl-wlr.enable`	`false`	Whether to enable Owl - tiling wayland compositor based on wlroots. Enabling this option will add owl to your system. . Example: `true`
`chaotic.owl-wlr.extraPackages`	`with pkgs; [ kitty rofi ];`	Extra packages to be installed system wide. Both pkgs.kitty and pkgs.rofi is required by default config. Example: `with pkgs; [ foot fuzzel gtklock mako grimblast ];`
`chaotic.owl-wlr.package`	`pkgs.owl-wlr_git`	The owl-wlr_git package to use. This option can provide different version of Owl compositor.
`chaotic.zfs-impermanence-on-shutdown.enable`	`false`	Whether to enable Impermanence on safe-shutdown through ZFS snapshots. Example: `true`
`chaotic.zfs-impermanence-on-shutdown.snapshot`	`null`	Snapshot of the volume in an "empty" state to roll back to. Example: `"start"`
`chaotic.zfs-impermanence-on-shutdown.volume`	`null`	Full description to the volume including pool. This volume must have a snapshot to an "empty" state. WARNING: The volume will be rolled back to the snapshot on every safe-shutdown. Example: `"zroot/ROOT/empty"`

Home-Manager Options

Key	Default	Description
`chaotic.nyx.cache.enable`	`true`	Whether to add Chaotic-Nyx's binary cache to settings. Example: `false`
`chaotic.nyx.nixPath.enable`	`true`	Whether to add Chaotic-Nyx to `nix.nixPath`. Example: `false`
`chaotic.nyx.overlay.enable`	`true`	Whether to add Chaotic-Nyx's overlay to system's pkgs. Example: `false`
`chaotic.nyx.overlay.flakeNixpkgs.config`	`pkgs.config`	Matches `nixpkgs.config` from the configuration of the Nix Packages collection. Example: `{ allowBroken = true; allowUnfree = true; }`
`chaotic.nyx.overlay.onTopOf`	`"flake-nixpkgs"`	Build Chaotic-Nyx's packages based on nyx's flake flakes or the system's pkgs. Enum: `one of "flake-nixpkgs", "user-pkgs"` Example: `"user-pkgs"`
`chaotic.nyx.registry.enable`	`true`	Whether to add Chaotic-Nyx to `nix.registry`. Example: `false`

Notes

Our branches

:godmode: Our nyxpkgs-unstable branch is the one that's always cached.

:shipit: The main branch is the primary target for contribution.

Contributions

We do accept third-party authored PRs.

Upstream to nixpkgs

If you are interested in pushing any of these packages to the upstream nixpkgs, you have our blessing.

If one of our contributors is mentioned in the deveriation's mantainers list (in this repository) please keep it when pushing to nixpkgs. But, please, tag us on the PR so we can participate in the reviewing.

Forks and partial code-taking

You are free to use our code, or portions of our code, following the MIT license restrictions.

Suggestions

If you have any suggestion to enhance our packages, modules, or even the CI's codes, let us know through the GitHub repo's issues.

Building over the user's pkgs

For cache reasons, Chaotic-Nyx now defaults to always use nixpkgs as provider of its dependencies.

If you need to change this behavior, set chaotic.nyx.onTopOf = "user-pkgs";. Be warned that you mostly won't be able to benefit from our binary cache after this change.

You can also disable our overlay entirely by configuring chaotic.nyx.overlay.enable = false;.

CachyOS kernels

Even though we provide linuxPackages_cachyos-lto, we don't maintain the kernel modules in it. Nixpkgs, where the derivations originate from, doesn't provide kernels built with Clang. Consequentially, adding later support for all the kernel modules available in Nixpkgs wouldn't be easy. Presently, xone is the only one guaranteed to work, and ZFS is known to not work.

Other variations of linuxPackages_cachyos works without any issues. But, we don't build the ones in linuxPackages_cachyos-rc, they should work, but don't expect cache for them.

You may install the CachyOS kernel directly using the default modules and overlays with pkgs.linuxPackages_cachyos. Alternatively, use chaotic.legacyPackages.x86_64-linux.linuxPackages_cachyos if you would like to use the package directly without using modules and overlay

Why am I building a kernel? Basic cache troubleshooting

For starters, suppose you're using our linuxPackages_cachyos as the kernel and an up-to-date flake lock. Check if all these three hashes prompt the same:


╰─λ nix eval 'github:chaotic-cx/nyx/nyxpkgs-unstable#linuxPackages_cachyos.kernel.outPath'
"/nix/store/441qhriiz5fa4l3xvvjw3h4bps7xfk08-linux-6.8.7"

╰─λ nix eval 'chaotic#linuxPackages_cachyos.kernel.outPath'
"/nix/store/441qhriiz5fa4l3xvvjw3h4bps7xfk08-linux-6.8.7"

╰─λ nix eval '/etc/nixos#nixosConfigurations.{{HOSTNAME}}.config.boot.kernelPackages.kernel.outPath'
"/nix/store/441qhriiz5fa4l3xvvjw3h4bps7xfk08-linux-6.8.7"

If the second is different from the first, you're probably adding a inputs.nixpkgs.follows to chaotic, simply remove it.

If the third is different from the first, you're most likely using an overlay that's changing the kernel or one of its dependencies; check your nixpkgs.overlays config.

If they all match, and you're still rebuilding the kernel, copy the hash from the result above, then change it in the following curl command:


╰─λ curl -L 'https://chaotic-nyx.cachix.org/441qhriiz5fa4l3xvvjw3h4bps7xfk08.narinfo'
StorePath: /nix/store/441qhriiz5fa4l3xvvjw3h4bps7xfk08-linux-6.8.7
URL: nar/e5ccded34e4608448c49d3e9fdc92441cd564ae629a4b93fd3f8a334bca7c71d.nar.zst
Compression: zstd
FileHash: sha256:e5ccded34e4608448c49d3e9fdc92441cd564ae629a4b93fd3f8a334bca7c71d
FileSize: 172226528
NarHash: sha256:1v410bnc3qazxscwxvm80c40i0fxzp0amvp93y0y4x3kikdwz035
NarSize: 184989384
References:
Deriver: snb6mg44fflzp3vm5fh4ybxa5j4nlfa5-linux-6.8.7.drv
Sig: chaotic-nyx.cachix.org-1:L0D5GiJf/VEc1brcqYSB+vzYDDV6ZoDP59b+0mrX3bm2b5bbvtH3xOR4XEXy7QILYoIx2Pd64qWN+6okOMQZCA==

If the command above fails without an 404, then you have an issue with your internet connection. If it fails with 404, then tag pedrohlc (Matrix, Telegram or GitHub), he really broke the cache.

If the command succeeds, and you're still building the cache, it can happen because of two things: (1) you might have tried to fetch said package before we deployed, then Nix will cache the 404 and won't try again; (2) you might have a misconfigured /etc/nix/nix.conf or outdated nix-daemon.

For the second one, check if it looks like this (the word “chaotic” should appear three times):


╰─λ grep chaotic /etc/nix/nix.conf
substituters = https://nix-community.cachix.org/ https://chaotic-nyx.cachix.org/ https://cache.nixos.org/
trusted-public-keys = cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs= chaotic-nyx.cachix.org-1:HfnXSw4pj95iI/n17rIDy40agHj12WfF+Gqk6SonIT8

An outdated nix-daemon can happen when you change nix settings, then nixos-rebuilt your system, but you didn't restart the nix-daemon service. The easiest way to fix it is to reboot.

About this page

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