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[Python-Dev] Location of CI for Windows Embeddable Distro


Just an update based on testing.  If I zip the modules up into python36.zip
(whether in .py or .pyc form) the linux binary does not find them.  If I
copy them into the embedded root, alongside the python executable, it finds
them as expected.

This just makes it seem more like an issue where Linux binary does not
respect .zip file as a source of modules.

Gerald R. Wiltse
jerrywiltse at gmail.com



On Thu, May 2, 2019 at 2:56 PM Gerald Wiltse <jerrywiltse at gmail.com> wrote:

> With minimal patching of tools/msi/make_zip.py, I was able to create an
> equivalent zip package on Linux.  It doesn't work out of the box of
> course.  I had to do two commands
>
> My biggest concern is that even if the layout is "correct" on linux, the
> python runtime might not actually support being run like this on Linux.
> Perhaps the code for using python36.zip as a landmark and source of modules
> is only implemented on Windows.  Do you know if that is the case?
>
>     tmp$ export LD_LIBRARY_PATH=$(pwd)
>     tmp$ export PYTHONHOME=$(pwd)
>     tmp$ export PYTHONPATH=$(pwd)
>     tmp$ ./python
>     Fatal Python error: Py_Initialize: Unable to get the locale encoding
>     ModuleNotFoundError: No module named 'encodings'
>
>     Current thread 0x00007fdde9eb1680 (most recent call first):
>     Aborted (core dumped)
>
> Here's the full directory structure, error, and patch I created. Any
> additional feedback would be great.
>
> https://gist.github.com/solvingj/87305e0f70e14d738d6989ba2f41352f
>
> Gerald R. Wiltse
> jerrywiltse at gmail.com
>
>
>
> On Thu, May 2, 2019 at 11:24 AM Gerald Wiltse <jerrywiltse at gmail.com>
> wrote:
>
>> I've successfully automated the build of the embedded zip on Windows for
>> 3.6 on my internal CI using tools/msi script.
>>
>> Moving onto linux, can you please summarize the primary
>> challenges/differences for creating the embeddable zip for linux?
>>
>> Gerald R. Wiltse
>> jerrywiltse at gmail.com
>>
>>
>>
>> On Wed, May 1, 2019 at 2:47 PM Gerald Wiltse <jerrywiltse at gmail.com>
>> wrote:
>>
>>> Yes, I'll help with this, and I try to get signed up with an account for
>>> the issue tracker ASAP.
>>>
>>> I've just started trying to build create the embeddable package for
>>> windows locally (all from source).  Once I have that automated, I'll take a
>>> naive stab at the Linux layout.  I'm sure i'll soon hit the additional
>>> complications you're talking about and come back to you with questions.
>>>
>>> Gerald R. Wiltse
>>> jerrywiltse at gmail.com
>>>
>>>
>>>
>>> On Wed, May 1, 2019 at 1:57 PM Steve Dower <steve.dower at python.org>
>>> wrote:
>>>
>>>> On 01May2019 1305, Gerald Wiltse wrote:
>>>> > That does help, thanks so much for the fast response!  I now see how
>>>> > it's executed on Azure pipelines also, so that should be enough for
>>>> me
>>>> > to reverse engineer the rest.
>>>> >
>>>> > Followup questions if you have time:
>>>> > 1. It seems that directory doesn't exist in the 3.6 branches/tags, so
>>>> it
>>>> > must have been done a different way back then.  Do you think it's
>>>> > back-portable to 3.6?
>>>>
>>>> Yep, it should work with 3.6. There were scripts under Tools/msi back
>>>> then that did the same thing, but with the Store app I rewrote it to be
>>>> more flexible.
>>>>
>>>> > 2. One of our objectives is to effectively create a nearly identical
>>>> > embeddable package for linux. Do you think the layout code is generic
>>>> > enough to be modified to create a linux equivalent?
>>>>
>>>> Probably not, it's under the "PC" directory because it is entirely
>>>> CPython specific.
>>>>
>>>> I'd love to be able to have a similar embeddable distro for Linux (and
>>>> macOS), and I'll be investing some of my time in working towards this,
>>>> but it's far more complicated than simply laying out the right files.
>>>> If
>>>> you're interested in helping with this, then we're in the right place
>>>> to
>>>> discuss it, but we'll likely have to move to the issue tracker at some
>>>> point once we figure out who else wants/needs to be involved.
>>>>
>>>> > Obviously, there are many alternative methods and documents for
>>>> creating
>>>> > "embeddable" pythons on linux, but the windows package has all the
>>>> > characteristics we want, and of course we'd like our Windows and
>>>> Linux
>>>> > process build and packaging processes to be as similar as possible,
>>>> so
>>>> > it seems attractive to try to port this layout script to linux.
>>>>
>>>> "make install" already does the same thing, but the install location
>>>> matters at build time, so it's a little more complex to make it work as
>>>> an embedded runtime. I'm sure there are people who know how to make it
>>>> work though.
>>>>
>>>> Cheers,
>>>> Steve
>>>>
>>>
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