Structurally, this extension is largely identical to the ``python.project``
However, where the ``project`` metadata refers to the upstream creators
of the software, the ``integrator`` metadata refers to the downstream
extension will not be used. However, if the software has been patched (for
example, backporting compatible fixes from a later version, or addressing
a platform compatibility issue), then this extension SHOULD be used, and
an integrator suffix added to the package version number.
+ version er.
If there are multiple redistributors in the chain, each one just overwrites
this extension with their particular metadata.