[PyQt] ANN: PyQt v5.14.1 Released

[Phil Thompson]

It's not a question of "upgrading". The Qt binaries use glibc v2.17. The 
corresponding tag is manylinux2014. The issue is that that requires a 
recent version of pip.

Phil

On 06/01/2020 16:59, Grzegorz Bokota wrote:
> And this glibc problem cannot be fixed with manylinux2010? There is a 
> need
> to upgrade to manylinux2014?
> 
> Regards,
> Grzegorz Bokota
> 
> Pon., 6 sty 2020, 14:54 użytkownik Florian Bruhin <me at the-compiler.org>
> napisał:
> 
>> On Mon, Jan 06, 2020 at 01:06:22PM +0000, Phil Thompson wrote:
>> > On 06/01/2020 12:55, Florian Bruhin wrote:
>> > > Hey,
>> > >
>> > > On Mon, Jan 06, 2020 at 01:04:32AM +0000, Phil Thompson wrote:
>> > > > PyQt v5.14.1 has been released. This is a minor bug-fix release.
>> > >
>> > > It looks like that release is a manylinux2014 rather than a manylinux1
>> > > release.
>> > > Is that intended?
>> >
>> > Yes. The manylinux1 tag was always a lie. The issue is the GLIBC
>> dependency
>> > which is imposed by Qt.
>> 
>> I guess it'd be good to keep up that lie until PyQt 5.15 or so, when
>> tooling
>> hopefully has caught up. Rationale below.
>> 
>> > > - Why is it building from source instead of using the wheel?
>> >
>> > Presumably because it doesn't like any of the wheels, probably because
>> pip
>> > is too old.
>> 
>> Ah, it looks like this happens because of how "python3 -m venv" works. 
>> It
>> uses
>> Python's ensurepip module, which as of Python 3.8.1 bundles pip 19.2.3
>> (i.e.
>> new enough for manylinux1 and manylinux2010, but not manylinux2014 - 
>> see
>> [1]).
>> 
>> Here's an example of what doesn't work anymore:
>> 
>>     $ pip --version
>>     pip 19.3.1 from
>> /home/florian/tmp/.hostenv/lib/python3.8/site-packages/pip (python 
>> 3.8)
>>     $ python3 --version
>>     Python 3.8.1
>> 
>>     $ python3 -m venv .venv
>>     $ .venv/bin/pip --version
>>     pip 19.2.3 from
>> /home/florian/tmp/.venv/lib/python3.8/site-packages/pip (python 3.8)
>> 
>>     $ .venv/bin/pip install --only-binary :all: PyQt5==5.14.1
>>     Collecting PyQt5==5.14.1
>>       ERROR: Could not find a version that satisfies the requirement
>> PyQt5==5.14.1 (from versions: [...], 5.14.0)
>> 
>> In other words, if you use the Python builtin way of creating virtual
>> environments, you'll need an extra step to be able to install PyQt5 
>> wheels
>> now.
>> 
>> When using wrappers around venv such as tox, that extra step might not 
>> be
>> supported in some obvious way (in the case of tox, I don't think I can 
>> get
>> it
>> to upgrade the virtualenv's pip before installing dependencies).
>> 
>> [1]
>> https://github.com/python/cpython/blob/v3.8.1/Lib/ensurepip/__init__.py#L13
>> [2] https://docs.python.org/3/library/venv.html
>> 
>> Florian
>> 
>> --
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>>        https://bruhin.software/ |
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