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# Nix Python Devenv
A Python development environment template using [devenv](https://devenv.sh) with working C bindings,
managed by [uv](https://docs.astral.sh/uv/) package manager.
A version of this repo with CUDA is available on the
[cuda branch](https://github.com/clementpoiret/nix-python-devenv/tree/cuda).
## 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](https://nixos.org/download/):
```bash
sh <(curl -L https://nixos.org/nix/install) --daemon
```
2. Install [devenv](https://devenv.sh/)
```bash
nix-env -iA devenv -f https://github.com/NixOS/nixpkgs/tarball/nixpkgs-unstable
```
3. Install [direnv](https://direnv.net/) (optional but recommended)
4. Clone and setup:
```bash
git clone --single-branch --branch cuda git@github.com: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:
```bash
hello
```
This will display the output of numpy functions.
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