The source tarball contains a waf binary. This file is a Python script with an embedded bzip2 archive, which is uncompressed and unpacked at runtime.
Although corresponding sources can be easily extracted, FTP Team does not consider waf binary as the preferred form of modification; it should be provided unpacked instead, or completely removed, if possible.
You might want to follow these guidelines to obtain an unpacked waf: https://wiki.debian.org/UnpackWaf
For more information please consult:
The tag is present in Lintian version
That is the most recent version we know about.
We use semantic versions.
The patch number is a commit step indicator relative to the
release tag in our Git
You can find the detection logic for this version at commit ea05801. For merge requests, please use the latest version in the Lintian check build-systems/waf.