Python should support VxWorks RTOS

6858a80c-8457-46a1-887f-9e6758175163 commented 6 years ago

BPO	31904
Nosy	@gpshead, @vstinner, @tiran, @bitdancer, @asvetlov, @ambv, @jimjjewett, @izbyshev, @kuhlenough, @miss-islington, @pxinwr
PRs	python/cpython#4179 python/cpython#4184 python/cpython#11951 python/cpython#11968 python/cpython#12051 python/cpython#12118 python/cpython#12157 python/cpython#12304 python/cpython#12305 python/cpython#12319 python/cpython#12321 python/cpython#12428 python/cpython#12646 python/cpython#12648 python/cpython#12670 python/cpython#12719 python/cpython#12833 python/cpython#13486 python/cpython#13535 python/cpython#19447 python/cpython#19448 python/cpython#20254 python/cpython#20256 python/cpython#21675 python/cpython#21821 python/cpython#23391 python/cpython#23394 python/cpython#23419 python/cpython#23473 python/cpython#21687 python/cpython#23489 python/cpython#23507 python/cpython#23518 python/cpython#23530 python/cpython#23716 python/cpython#23718 python/cpython#23741 python/cpython#23776 python/cpython#23815 python/cpython#23886 python/cpython#23920 python/cpython#24191 python/cpython#25965 python/cpython#25983

BPO

31904

Nosy

@gpshead, @vstinner, @tiran, @bitdancer, @asvetlov, @ambv, @jimjjewett, @izbyshev, @kuhlenough, @miss-islington, @pxinwr

PRs

python/cpython#4179

python/cpython#4184

python/cpython#11951

python/cpython#11968

python/cpython#12051

python/cpython#12118

python/cpython#12157

python/cpython#12304

python/cpython#12305

python/cpython#12319

python/cpython#12321

python/cpython#12428

python/cpython#12646

python/cpython#12648

python/cpython#12670

python/cpython#12719

python/cpython#12833

python/cpython#13486

python/cpython#13535

python/cpython#19447

python/cpython#19448

python/cpython#20254

python/cpython#20256

python/cpython#21675

python/cpython#21821

python/cpython#23391

python/cpython#23394

python/cpython#23419

python/cpython#23473

python/cpython#21687

python/cpython#23489

python/cpython#23507

python/cpython#23518

python/cpython#23530

python/cpython#23716

python/cpython#23718

python/cpython#23741

python/cpython#23776

python/cpython#23815

python/cpython#23886

python/cpython#23920

python/cpython#24191

python/cpython#25965

python/cpython#25983

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields: ```python assignee = None closed_at = None created_at = labels = ['type-feature', '3.10', 'build'] title = 'Python should support VxWorks RTOS' updated_at = user = 'https://github.com/kuhlenough' ``` bugs.python.org fields: ```python activity = actor = 'Alex.Willmer' assignee = 'none' closed = False closed_date = None closer = None components = ['Build'] creation = creator = 'Brian Kuhl' dependencies = [] files = [] hgrepos = [] issue_num = 31904 keywords = ['patch'] message_count = 46.0 messages = ['305249', '305511', '305657', '305690', '305869', '305877', '315365', '336680', '336742', '337083', '337867', '337909', '338964', '339059', '339898', '340244', '340245', '340310', '340385', '340406', '340409', '343004', '343008', '366073', '374361', '374460', '374469', '382014', '382020', '382021', '382023', '382198', '382218', '382276', '382525', '382793', '382807', '383009', '383096', '383097', '383098', '383226', '383259', '383467', '385461', '393247'] nosy_count = 11.0 nosy_names = ['gregory.p.smith', 'vstinner', 'christian.heimes', 'r.david.murray', 'asvetlov', 'lukasz.langa', 'Jim.Jewett', 'izbyshev', 'Brian Kuhl', 'miss-islington', 'pxinwr'] pr_nums = ['4179', '4184', '11951', '11968', '12051', '12118', '12157', '12304', '12305', '12319', '12321', '12428', '12646', '12648', '12670', '12719', '12833', '13486', '13535', '19447', '19448', '20254', '20256', '21675', '21821', '23391', '23394', '23419', '23473', '21687', '23489', '23507', '23518', '23530', '23716', '23718', '23741', '23776', '23815', '23886', '23920', '24191', '25965', '25983'] priority = 'normal' resolution = None stage = 'patch review' status = 'open' superseder = None type = 'enhancement' url = 'https://bugs.python.org/issue31904' versions = ['Python 3.10'] ```

6858a80c-8457-46a1-887f-9e6758175163 commented 6 years ago

With the trend to use REST APIs between the cloud and the IoT there is increasing interest in Python on embedded devices. Cloud developer’s typical release a reference REST implementation of JSON and/or Python on Linux and leave it to the device developer to adapt it to their platform. While many devices use eLinux, others with IP and/or hard real-time constraints need a commercial RTOS platform.

Currently the automake configure explicitly prevents configuration of VxWorks as a build target.

I'll provide a pull request referencing this issue with the required changes.

terryjreedy commented 6 years ago

The following might be relevant to this issue: https://www.python.org/dev/peps/pep-0011/#supporting-platforms

vstinner commented 6 years ago

To support a new platform, you need a developer who can support this platform next years, a working buildbot, etc. You can start a discussion on python-dev to get a first feedback.

Without a strong support, this issue should be fixed a REJECTED and a patch should be maintainted out of the tree. Since the PR seems small, it should be "easy" to keep a fork of CPython up to date.

vstinner commented 6 years ago

FYI I already started a thread on python-dev: [Python-Dev] Partial support of a platform https://mail.python.org/pipermail/python-dev/2017-November/150238.html

6858a80c-8457-46a1-887f-9e6758175163 commented 6 years ago

I'm quite happy to take on maintainer role for Python on VxWorks, so I think we can get that one solved.

Enabling a build bot for cross compile of propitiatory OS presents a number of legal licensing issues that outside my control. And I'll discuss it internally at Wind River. However I think it is in line with where our customers want us to go, so well worth pursuing.

I'll keep this pull request active and up to date, till the broader issues you have raised can be resolved.

I'll post a proposal on the mailing list after I consulted within Wind River.

Many thanks for your interest and support.

bitdancer commented 6 years ago

I'm not sure what licensing issues you are talking about, but setting up a buildbot shouldn't normally run into any. As long as you have a license to the run the OS, the fact that you are using it to receive jobs from our build master and run them shouldn't be a problem. You can keep the whole thing behind a firewall in a DMZ: the slave makes outbound connections to pick up its jobs.

On the other hand, the logistics of setting up a cross compile buildbot might be a bit complex, I've never done that. You might need specific support from our build master. In any case, the python-buldbots mailing list is the place to talk if you want to/can pursue this.

ned-deily commented 6 years ago

As I commented on the PR, I think this PR should not be merged until and if there is a consensus that this support belongs in the standard cpython repo and there is an agreed-upon plan how this platform would be supported on going. I think it needs an approved PEP. We've allowed ourselves in the past to do a long-term disservice to our downstream users by merging in support for platforms that we were not equipped to support. In any case, it would need to wait for 3.8.