Document codebase maturity
Clearly signalling a codebase’s maturity helps others decide whether to use and contribute to it. A codebase version’s maturity includes the maturity of its dependencies. Understanding how a codebase has evolved is key to understanding the codebase and how to contribute to it.
Requirements
- The codebase MUST be versioned.
- The codebase MUST prominently document whether or not there are versions of the codebase that are ready to use.
- Codebase versions that are ready to use MUST only depend on versions of other codebases that are also ready to use.
- The codebase SHOULD contain a log of changes from version to version, for example in the
CHANGELOG
. - The method for assigning version identifiers SHOULD be documented.
- It is OPTIONAL to use semantic versioning.
How to test
- Confirm that the codebase has a strategy for versioning which is documented.
- Confirm that it is obvious to policy makers, managers, developers and designers whether the codebase has versions that are ready to use.
- Confirm that ready to use versions of the codebase do not depend on any versions of other codebases that are not ready to use.
- Check that the versioning scheme of the codebase is documented and followed.
- Check that there is a log of changes.
Public policy makers: what you need to do
- When developing policy, understand that any source code developed needs to be tested and improved before it can be put into service.
- Consider versioning policy changes, especially when they trigger new versions of the source code.
Managers: what you need to do
- Make sure that services only rely on versions of codebases of equal or greater maturity than the service. For example, don’t use a beta version of a codebase in a production service.
Developers and designers: what you need to do
- Make sure that the codebase versioning approach is followed for all releases.
Further reading
- Semantic Versioning Specification used by many codebases to label versions.
- Software release life cycle
- Service Design and Delivery Process by the Australian Digital Transformation Agency.
- Service Manual on Agile Delivery by the UK Government Digital Service.