[PATCH v2 0/2] Better handle and document Python needs for Kernel build

[Mauro Carvalho Chehab <mchehab+huawei@kernel.org>]

Hi Jon,

It follows the second version of this small series. It contains
missing patches from the python backward-compatibility series.

I dropped support for 2.7 and did some changes at changes.rst
per Akira's request.

They're not urgent, IMO it should be OK to have them merged for 6.17.

The first patch ensures that kernel-doc won't crash with version
3.2 (tested on 3.4, as 3.2 is like an unicorn: docker containers v1
don't run anymore on Fedora, building is broken since at least
Fedora 32, Anaconda doesn't have it anymore).

With this change, on elder versions, it would emit a warning and
do nothing, as the actual code depends on features at 3.6 (f-strings)
and 3.7 (ordered dict).

The second patch changes process/changes.rst. Currently, it makes
one  think that Python is optional. While not having python may
work on some cases, it breaks on arm/arm64 with defconfigs.
It also breaks with allyesconfig/almodconfig (at least on x86/x86_64),
with clang (on some archs) and apparently on some other
subsystems that I didn't care enough to identify, as for me,
breaking on arm/arm64 with defconfigs, and on x86/x86_64
with allyesconfig/allmodconfig is enough evidence that this
is mandatory nowadays.

So, remove optional from Python and add a quick description
about where it is required, leaving it open to one's imagination
that it could break with other configs we didn't map.

---
v2: drop support for 2.7, updated a comment and updated changes.rst.

Mauro Carvalho Chehab (2):
  docs: kernel-doc: avoid script crash on ancient Python
  docs: changes: better document Python needs

 Documentation/process/changes.rst |  9 +++++++-
 scripts/kernel-doc.py             | 34 ++++++++++++++++++++++---------
 2 files changed, 32 insertions(+), 11 deletions(-)

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2.49.0