Nix Python Devenv

A Python development environment template using devenv with working C bindings, managed by uv package manager.

A version of this repo with CUDA is available on the cuda branch.

Features

• CUDA toolkit and CUDNN support (see the cuda branch)
• Python 3.x environment
• Fast package management with uv
• Automatic environment activation with direnv
• Example script using numpy

Installation

1. Install Nix:

   sh <(curl -L https://nixos.org/nix/install) --daemon

2. Install devenv

   nix-env -iA devenv -f https://github.com/NixOS/nixpkgs/tarball/nixpkgs-unstable

3. Install direnv (optional but recommended)

4. Clone and setup:

   git clone --single-branch --branch cuda [email protected]:clementpoiret/nix-python-devenv.git
   
   # Allow direnv to manage the environment
   direnv allow

Usage

The environment automatically:

• Activates the Python virtual environment
• Sets up LD_LIBRARY_PATH
• Provides the hello command to test C Bindings

Run the sample script:

hello

This will display the output of numpy functions.