Dependencies

Since none of the bases that are available for rocks contain a default Python installation, including a Python interpreter in Rockcraft projects is mandatory. Both the python and the poetry plugins also require the venv module to create the virtual environment where Python packages are installed at build time.

The easiest way to do this is to include the python3-venv package in the stage-packages of the part that uses the Python-based plugin. This will pull in the default Python interpreter for the build-base, like Python 3.10 for Ubuntu 22.04. However, other versions can be used by explicitly declaring them - here’s an example that uses python3.12-venv from the Deadsnakes ppa:

rockcraft.yaml

 package-repositories:
   - type: apt
     ppa: deadsnakes/ppa
     priority: always

 parts:
   my-part:
     plugin: <python or poetry>
     source: .
     stage-packages: [python3.12-venv]