Don't run regen-sbom in regen-all - it requires internet access

[befeleme]

Bug report

Bug description:

make regen-all should be possible to run when building without the internet access. regen-sbom hits PyPI to determine pip's metadata and exits if not successful, so it shouldn't be a part of the regen-all target.

In previous cases like this, the problematic targets were removed (#112120)

CPython versions tested on:

3.13

Operating systems tested on:

Linux

Linked PRs

• gh-114240: Skip verifying pip SBOM entry against PyPI if offline outside CI #114255

[erlend-aasland]

Note that make regen-configure has required internet access for quite a while; this is nothing new.

[sethmlarson]

@befeleme Apologies for the added friction! I would like to keep regen-sbom as a part of regen-all, I can make the generate_sbom.py script more resilient in the case of no internet connection and reuse pip's SBOM entry in that case.

[sethmlarson]

I've implemented my proposal in this PR: #114255

[befeleme]

Note that make regen-configure has required internet access for quite a while; this is nothing new.

It is, but it's not a part of make regen-all target, see: https://github.com/python/cpython/blob/main/Makefile.pre.in#L1370

[hroncok]

This is still not working as expected. When the build happens offline:

[cpython (main)]$ LANG=C.utf-8 make regen-sbom 
python3.13 ./Tools/build/generate_sbom.py
Packages defined in SBOM tool don't match those defined in SBOM file: {'libb2', 'pip', 'macholib', 'msgpack', 'certifi', 'resolvelib', 'tenacity', 'pyparsing', 'chardet', 'webencodings', 'packaging', 'expat', 'urllib3', 'six', 'hacl-star', 'rich', 'platformdirs', 'idna', 'typing_extensions', 'requests', 'distlib', 'tomli', 'mpdecimal', 'distro', 'truststore', 'pygments', 'colorama', 'cachecontrol', 'setuptools', 'pyproject-hooks'}, {'mpdecimal', 'libb2', 'hacl-star', 'pip', 'expat', 'macholib'}
See 'https://devguide.python.org/developer-workflow/sbom' for more information.
make: *** [Makefile:2842: regen-sbom] Error 1

This behavior was released in Python 3.12.2.

[hroncok]

The problem is from https://github.com/python/cpython/pull/114450/files#r1482058937