Switch to a different Python3 version

Switch to a different Python3 version

[Lijun Chen]

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Hi,


Currently we are building a Yocto image based on Hardknott release, which includes python 3.9.4. Due to a App constraint, we have to downgrade Python3 to 3.8. I tried copying over 3.8.5 bb file and associated poky/meta/recipes-devtools/python/python3/ folder, but the building failed. What is the best way to switch/downgrade python3 version?


Thanks,

Lijun

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Re: [yocto] Switch to a different Python3 version

[Alexander Kanavin]

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The best way is to fix the app. Such major downgrades are firmly uncharted
territory, and aren't supported. If you have errors, you need to figure out
yourself how to fix them - but if you provide the logs, we can try to help.

Alex

On Tue, 21 Sept 2021 at 22:00, Lijun Chen <lijchen@blackberry.com> wrote:

> Hi,
>
>
> Currently we are building a Yocto image based on Hardknott release, which
> includes python 3.9.4. Due to a App constraint, we have to downgrade
> Python3 to 3.8. I tried copying over 3.8.5 bb file and associated
> poky/meta/recipes-devtools/python/python3/ folder, but the building
> failed. What is the best way to switch/downgrade python3 version?
>
>
> Thanks,
>
> Lijun
> ------------------------------
> This transmission (including any attachments) may contain confidential
> information, privileged material (including material protected by the
> solicitor-client or other applicable privileges), or constitute non-public
> information. Any use of this information by anyone other than the intended
> recipient is prohibited. If you have received this transmission in error,
> please immediately reply to the sender and delete this information from
> your system. Use, dissemination, distribution, or reproduction of this
> transmission by unintended recipients is not authorized and may be unlawful.
>
> 
>
>

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Re: [yocto] Switch to a different Python3 version

[Richard Purdie]

On Tue, 2021-09-21 at 20:00 +0000, Lijun Chen wrote:
> Hi,
> 
> Currently we are building a Yocto image based on Hardknott release, which
> includes python 3.9.4. Due to a App constraint, we have to downgrade Python3
> to 3.8. I tried copying over 3.8.5 bb file andassociated poky/meta/recipes-
> devtools/python/python3/ folder, but the building failed. What is the best way
> to switch/downgrade python3 version?
> 

Hard to say without understanding how it failed. What was the error?

You probably need to match python3 and python3-native versions but I don't know
if you did.

Cheers,

Richard