I'm using Nixpacks to build a Docker image from a Python project. The build works fine when my project directory does not contain a local virtual environment. However, if I create a virtual environment (e.g., with python -m venv venv), the build hangs indefinitely at the Building Nixpacks image... step. Steps to reproduce: Project structure before creating the virtual environment: . ├── main.py └── requirements.txt Build command (works fine): sudo nixpacks build . -t image1 Create a virtual environment: $ python -m venv venv Now the directory structure is: . ├── main.py ├── requirements.txt └── venv/ Run the same build command again: sudo nixpacks build . -t image1 The build hangs at Building Nixpacks image... and never completes. Why does the presence of the venv directory cause Nixpacks to hang? Is there a recommended way to exclude the local venv directory from the build context, or configure Nixpacks to ignore it? Is this expected behavior, or am I missing a configuration step? Continue reading...
