Hi Alex,

We have a custom fetcher implemented as a bbclass that calls out to a
python script.  That is why we see these issues with native. Here's a
sample bbclass and recipe that reproduces the issue:

impfail.bbclass
```
inherit python3native

do_unpack[noexec] = "1"
do_patch[noexec] = "1"
do_install[noexec] = "1"

do_fetch() {
    python3 -c "import pydoc"
}
```

classrunner_0.0.1.bb
```
SUMMARY = "Python runner"
LICENSE = "CLOSED"
inherit impfail
```

-Glenn


On Thu, Nov 12, 2020 at 4:52 AM Alexander Kanavin <alex.kana...@gmail.com>
wrote:

> A quick fix may be to add a target python3 dependency to your recipe, yes
> ugly, but I can't figure out how to provide target python configuration to
> native python used in the context of building target recipes otherwise.
>
> Alex
>
>
> On Thu, 12 Nov 2020 at 10:49, Alexander Kanavin <alex.kana...@gmail.com>
> wrote:
>
>> On Thu, 12 Nov 2020 at 02:23, Glenn Stroz via lists.openembedded.org
>> <gstroz=uber....@lists.openembedded.org> wrote:
>>
>>> We've been upgrading our work to Dunfell and have encountered an issue
>>> with python3-native.
>>>
>>> One of our python3-native scripts uses pydoc and that in turn eventually
>>> pulls in python's sysconfig. However, this is failing to import with the
>>> following stack trace:
>>>
>>> ```
>>>     import pydoc
>>>   File
>>> "/home/gstroz/.cache/avos/_avos_gstroz/avos/yocto-dunfell/build/tmp/work/corei7-64-poky-linux/ebpf-daemon/2020.282.17-r0/recipe-sysroot-native/usr/lib/python3.8/pydoc.py",
>>> line 366, in <module>
>>>     class Doc:
>>>   File
>>> "/home/gstroz/.cache/avos/_avos_gstroz/avos/yocto-dunfell/build/tmp/work/corei7-64-poky-linux/ebpf-daemon/2020.282.17-r0/recipe-sysroot-native/usr/lib/python3.8/pydoc.py",
>>> line 396, in Doc
>>>     def getdocloc(self, object, basedir=sysconfig.get_path('stdlib')):
>>>   File
>>> "/home/gstroz/.cache/avos/_avos_gstroz/avos/yocto-dunfell/build/tmp/work/corei7-64-poky-linux/ebpf-daemon/2020.282.17-r0/recipe-sysroot-native/usr/lib/python3.8/sysconfig.py",
>>> line 519, in get_path
>>>     return get_paths(scheme, vars, expand)[name]
>>>   File
>>> "/home/gstroz/.cache/avos/_avos_gstroz/avos/yocto-dunfell/build/tmp/work/corei7-64-poky-linux/ebpf-daemon/2020.282.17-r0/recipe-sysroot-native/usr/lib/python3.8/sysconfig.py",
>>> line 509, in get_paths
>>>     return _expand_vars(scheme, vars)
>>>   File
>>> "/home/gstroz/.cache/avos/_avos_gstroz/avos/yocto-dunfell/build/tmp/work/corei7-64-poky-linux/ebpf-daemon/2020.282.17-r0/recipe-sysroot-native/usr/lib/python3.8/sysconfig.py",
>>> line 172, in _expand_vars
>>>     _extend_dict(vars, get_config_vars())
>>>   File
>>> "/home/gstroz/.cache/avos/_avos_gstroz/avos/yocto-dunfell/build/tmp/work/corei7-64-poky-linux/ebpf-daemon/2020.282.17-r0/recipe-sysroot-native/usr/lib/python3.8/sysconfig.py",
>>> line 558, in get_config_vars
>>>     _init_posix(_CONFIG_VARS)
>>>   File
>>> "/home/gstroz/.cache/avos/_avos_gstroz/avos/yocto-dunfell/build/tmp/work/corei7-64-poky-linux/ebpf-daemon/2020.282.17-r0/recipe-sysroot-native/usr/lib/python3.8/sysconfig.py",
>>> line 428, in _init_posix
>>>     _temp = __import__(name, globals(), locals(), ['build_time_vars'], 0)
>>> ModuleNotFoundError: No module named '_sysconfigdata'
>>> ```
>>>
>>> I did a little digging and the following commit seems to reference
>>> related work:
>>>
>>>
>>> https://github.com/openembedded/openembedded-core/commit/02714c105426b0d687620913c1a7401b386428b6
>>>
>>> I see that there is a patch added which adds the following to
>>> `sysconfig.py`:
>>>
>>> ```
>>>   if 'STAGING_LIBDIR' in os.environ:
>>>
>>> sys.path.append(os.environ['STAGING_LIBDIR']+'/python-sysconfigdata')
>>> ```
>>>
>>> However, STAGING_LIBDIR does not contain this path:
>>>
>>> ```
>>> ls
>>> /home/gstroz/.cache/avos/_avos_gstroz/avos/yocto-dunfell/build/tmp/work/corei7-64-poky-linux/ebpf-daemon/2020.282.17-r0/recipe-sysroot/usr/lib/python-sysconfigdata
>>>
>>> ls: cannot access
>>> '/home/gstroz/.cache/avos/_avos_gstroz/avos/yocto-dunfell/build/tmp/work/corei7-64-poky-linux/ebpf-daemon/2020.282.17-r0/recipe-sysroot/usr/lib/python-sysconfigdata':
>>> No such file or directory
>>> ```
>>>
>>> It appears as if this should really be pointing to STAGING_LIBDIR_NATIVE
>>> which does exist:
>>>
>>> ```
>>> ls
>>> /home/gstroz/.cache/avos/_avos_gstroz/avos/yocto-dunfell/build/tmp/work/corei7-64-poky-linux/ebpf-daemon/2020.282.17-r0/recipe-sysroot-native/usr/lib/python-sysconfigdata
>>> _sysconfigdata.py
>>> ```
>>>
>>> The referenced commit made efforts to combine the native and cross
>>> python3 bbclass files into one. However, I think this may be something that
>>> needs to be treated differently.
>>>
>>> Anyone have any thoughts on how to proceed?
>>>
>>
>> Can you share the exact context where this is happening? Is your script
>> coming from a recipe and can you show that recipe?
>>
>> Alex
>>
>>
>
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