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Comfyui Nix

Comfyui Nix is a Nix flake that packages ComfyUI with Python 3.12 and curated custom nodes for local use on macOS with Apple Silicon and Linux. It offers default and hardware-specific packages and can be used from the command line or included in NixOS and nix-darwin configurations.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Comfyui Nix — OpenViST project profile in AI Infrastructure & Serving.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use it when you want to install or configure a local ComfyUI environment through Nix, especially as part of a declarative NixOS or nix-darwin setup.

Who it is for

  • Nix users who want a managed local ComfyUI environment.
  • NixOS and nix-darwin users adding ComfyUI to a system configuration.
  • Linux users selecting a ComfyUI package for NVIDIA CUDA, AMD ROCm or Intel XPU hardware.

Documented uses

  • Launch ComfyUI through a Nix flake rather than manually managing its Python environment.
  • Add ComfyUI and a selected hardware package to a Nix system configuration.
  • Pass supported ComfyUI command-line options, such as a custom port or data directory.
Before you choose

Requirements & limits

The repository is public and the project is licensed under MIT. Nix is required for the documented flake commands and configuration examples.

  • The flake uses Python 3.12 and includes curated custom nodes.
  • The CUDA package requires NVIDIA driver 580 or newer and targets Turing through Blackwell GPUs.
  • The README reports ROCm validation so far only on gfx1100.
  • Intel XPU packages are offered for Linux x86_64, but maintainers say they have not tested them on real Intel hardware.
  • ComfyUI CLI options are supported; the README lists options for ports, data directories, network listening and VRAM use.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Run ComfyUI with the Nix flake

Launch the default ComfyUI package on supported macOS Apple Silicon or Linux systems.

Before you start

  • Nix is available on the host.
  • The host is macOS on Apple Silicon or Linux.

Steps

  1. Run nix run github:utensils/comfyui-nix -- --open.

  2. Use the browser that opens when ComfyUI is ready.

Expected outcome

ComfyUI is launched and the browser is opened when ready.

Guide limitations

  • The default data directory is ~/.config/comfy-ui on Linux and ~/Library/Application Support/comfy-ui on macOS.
  • The documented platform support is macOS Apple Silicon and Linux; the default command does not select a GPU-specific package.
Documentation 1 ↗
Source-based practical guide

Run the CUDA package on Linux with NVIDIA

Launch the CUDA build of ComfyUI on a Linux system with a supported NVIDIA GPU.

Before you start

  • Nix is available on the host.
  • The host runs Linux and has an NVIDIA GPU with architecture Turing (RTX 20 series) through Blackwell (RTX 50 series).
  • The NVIDIA driver is version 580 or newer.

Steps

  1. Run nix run github:utensils/comfyui-nix#cuda.

  2. Use ComfyUI with the launched CUDA package.

Expected outcome

The CUDA ComfyUI package is launched using pre-built PyTorch wheels.

Guide limitations

  • CUDA 13 does not support pre-Turing GPUs; Pascal and Volta users must use an older comfyui-nix release.
  • The documented package downloads approximately 2 GB of pre-built wheels.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
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Sources checked
15 October 2026
Original website title
utensils/comfyui-nix · Official homepage title · retained in its source language
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