Craft Parts

Craft-parts provides a mechanism to obtain data from different sources, process it in various ways, and prepare a filesystem subtree suitable for deployment. The components used in its project specification are called parts, which can be independently downloaded, built and installed, and also depend on each other in order to assemble the subtree containing the final artifacts.

License

Free software: GNU Lesser General Public License v3

Documentation

https://canonical-craft-parts.readthedocs-hosted.com/en/latest/

Contributing

A Makefile is provided for easy interaction with the project. To see all available options run:

make help

Development Environment

In order to develop any apt related items, the python-apt package is needed. The apt extra will require this package in general.

Ubuntu 22.04 is assumed in the rest of this setup

Development packages, such as those to build the Apt Python package are required:

sudo apt install libapt-pkg-dev intltool fuse-overlayfs python3.10-venv python3-dev gcc g++ make

The following are required to run integration tests (it is a default target for make tests):

sudo snap install chisel --candidate
sudo apt install ninja-build cmake scons qt5-qmake p7zip rpm \
                 autoconf automake autopoint gcc git gperf help2man libtool texinfo \
                 pkg-config

Create virtual environment to develop in and activate it:

python3 -m venv .venv
source .venv/bin/activate

Install the required Python packages

pip install -e .[dev,docs]
pip install https://launchpad.net/ubuntu/+archive/primary/+sourcefiles/python-apt/2.4.0ubuntu1/python-apt_2.4.0ubuntu1.tar.xz

Python Apt across Ubuntu series

• focal (20.04): https://launchpad.net/ubuntu/+archive/primary/+sourcefiles/python-apt/2.0.1ubuntu0.20.04.1/python-apt_2.0.1ubuntu0.20.04.1.tar.xz
• jammy (22.04): https://launchpad.net/ubuntu/+archive/primary/+sourcefiles/python-apt/2.4.0ubuntu1/python-apt_2.4.0ubuntu1.tar.xz
• lunar (23.04): https://launchpad.net/ubuntu/+archive/primary/+sourcefiles/python-apt/2.5.3ubuntu1/python-apt_2.5.3ubuntu1.tar.xz
• noble (24.04): https://launchpad.net/ubuntu/+archive/primary/+sourcefiles/python-apt/2.7.7ubuntu1/python-apt_2.7.7ubuntu1.tar.xz

Running tests

To run all tests in the suite run:

make tests

To get coverage information for Craft Parts from the unit tests:

make coverage

Adding new requirements

If a new dependency is added to the project run:

make freeze-requirements

Verifying documentation changes

To locally verify documentation changes run:

make docs

After running, newly generated documentation shall be available at ./docs/_build/html/.

Committing code

Please follow these guidelines when committing code for this project:

• Use a topic with a colon to start the subject
• Separate subject from body with a blank line
• Limit the subject line to 50 characters
• Do not capitalize the subject line
• Do not end the subject line with a period
• Use the imperative mood in the subject line
• Wrap the body at 72 characters
• Use the body to explain what and why (instead of how)