It looks similar as
https://github.com/conda-forge/python-feedstock/issues/738, but the issue
shows up only when installing numpy.
mamba create -n pybug python
mamba activate pybug
mamba update --all
all work fine. Then
mamba install cython is OK
mamba install numpy wants to change python to free-threaded.
mamba --version
mamba 1.5.10
conda 24.9.2
Le mar. 26 nov. 2024, à 17 h 44, Ralf Gommers a
écrit :
> Yes, that does look like a conda-forge issue. I think it's this one:
> https://github.com/conda-forge/python-feedstock/issues/738
>
> On Tue, Nov 26, 2024 at 6:06 PM george trojan via NumPy-Discussion <
> numpy-discussion@python.org> wrote:
>
>> My apologies if this is a wrong venue. Is this a conda-forge problem?
>> When I run
>>
>> mamba create -n foo meson-python numpy 'python>=3.13'
>>
>> the free-threaded python is selected:
>>
>> + python 3.13.0 h6355ac2_0_cp313tconda-forge
>> Cached
>> + numpy 2.1.3 py313hb01392b_0 conda-forge
>> Cached
>>
>> When python spec is moved to the front, I do get the "usual" version.
>> However, when I build a python extension with conda-build, I do not control
>> the order. The extension is created for the free-threaded version. Here is
>> my requirements section in recipe/meta.yaml:
>>
>> requirements:
>> build:
>> - {{ compiler('c') }}
>> - {{ compiler('fortran') }}
>> host:
>> - python >=3.13
>> - python_abi =3.13.* *_cp313 # needed to prevent selection of
>> freethreaded python
>> - meson-python
>> - numpy >=2.0
>> - pip
>> run:
>> - python >=3.13
>> - numpy >=2.0
>>
>> I did manage to find a workaround, which is the python_abi line. Am I
>> doing it right?
>>
>>
>>
>>
>>
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>>
>
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