I use a bbappend for python3 in meta-wayland for almost a year now
because i had issues installing python scripts with /usr/bin/python
shebang e.g. here in sway:
<https://github.com/swaywm/sway/blob/master/contrib/inactive-windows-transparency.py>
Issue has been that, if adding this script to do_install(), package_qa
failed because of the missing /usr/bin/python provider.
Ran into this quite a few times in the past and then created the
symlink instead of patching shebangs
I just wanted to mention, that having a symlink would be an alternative
to patching shebangs and as i was asked to send a patch, i did. But I'm
fine with whatever is done in oe-core.
Basically I also think the best solution would be, upstream would
deprecate /usr/bin/python usage. Unfortunaltey it's not, and so there
will always be people using it.
Am Di, 22. Nov 2022 um 17:41:22 +0000 schrieb Ross Burton
<[email protected]>:
On 22 Nov 2022, at 04:42, Markus Volk via lists.openembedded.org
<[email protected]
<mailto:[email protected]>> wrote:
On Mon, Nov 21 2022 at 06:48:07 PM +0100, Alexander Kanavin
<[email protected] <mailto:[email protected]>> wrote:
On my Debian systems, indeed, /usr/bin/python is absent.
Debian has a package for this
<https://packages.debian.org/bookworm/python-is-python3>
And that’s a perfectly good solution that I like.
Personally, I think people should forget that /usr/bin/python exists:
the recommendation from Python is to call python2 or python3. I can
quote from PEP-0394:
“””
Depending on a distribution or system configuration, python may or
may not be installed. If python is installed its target interpreter
may refer to python2 or python3.”
…
• Distributors may choose to set the behavior of the python
command as follows:
• python2,
• python3,
• not provide python command,
• allow python to be configurable by an end user or a
system administrator.
“””
We’ve picked option 3. As per Python upstream, that’s absolutely
fine.
If you have a serious need that /usr/bin/python exists, and is a
symlink to python3, then could you not make a simple recipe that
RDEPENDS on python3 and ships just a /usr/bin/python -> python3
symlink? You can even put this in your layer to avoid having to
debate it with the oe-core maintainers.
Ross
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