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  • platform.machine() on salsa i386 build?

    From Ole Streicher@21:1/5 to All on Sat Oct 30 14:50:02 2021
    Hi,

    I have a package (pyraf) where I need to switch off some tests for i386
    (but not for other 32-bit platforms). I do this by

    import platform
    is_i386 = platform.machine() in ('i386', 'i486', 'i586', 'i686')

    [...]
    @pytest.mark.skipif(is_i386, reason='diff is not identical on i386')
    def test_gki_single_prow():

    https://salsa.debian.org/debian-astro-team/pyraf/-/blob/master/debian/patches/Skip-tests-that-are-too-tight-for-i386.patch

    However, on Salsa this fails; and it appears that this test is
    ignored. Further investigation gave me that there -- during the regular (pybuild) test -- platform.machine() gives "x86_64", despite of the
    32-bit platform.

    https://salsa.debian.org/debian-astro-team/pyraf/-/jobs/2130878#L2062

    How can one find out the correct machine here?

    Best regards

    Ole

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  • From Andrey Rahmatullin@21:1/5 to Ole Streicher on Sat Oct 30 20:50:02 2021
    On Sat, Oct 30, 2021 at 02:20:40PM +0200, Ole Streicher wrote:
    I have a package (pyraf) where I need to switch off some tests for i386
    (but not for other 32-bit platforms). I do this by

    import platform
    is_i386 = platform.machine() in ('i386', 'i486', 'i586', 'i686')
    Yup, this is incorrect. This is the same as `uname -m` and so returns the kernel architecture.
    If you want to do this purely at the upstream side without checking DEB_HOST_ARCH, AFAIK there is no 100% reliable way to do this.
    Please read https://docs.python.org/3/library/platform.html#platform.architecture for further ideas and caveats.


    --
    WBR, wRAR

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  • From Stefano Rivera@21:1/5 to All on Sat Oct 30 21:50:02 2021
    Hi Ole (2021.10.30_12:20:40_+0000)
    How can one find out the correct machine here?

    sys.implementation._multiarch will return the Debian multiarch tuple
    that python was built for.

    SR

    --
    Stefano Rivera
    http://tumbleweed.org.za/
    +1 415 683 3272

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  • From Nilesh Patra@21:1/5 to Ole Streicher on Sat Oct 30 21:30:01 2021
    To: debian-python@lists.debian.org

    This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --GbETFFKkevUCp8BpsmDNRGBN5BO5pRl99
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    Hi Ole,

    On 10/30/21 5:50 PM, Ole Streicher wrote:
    Hi,
    https://salsa.debian.org/debian-astro-team/pyraf/-/jobs/2130878#L2062

    How can one find out the correct machine here?

    I just committed something to salsa -- sort of a hack, but it works (i386 pipeline passes). I do this
    for one of my other package as well. Please consider taking a look.

    Nilesh





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  • From Ole Streicher@21:1/5 to Nilesh Patra on Sat Oct 30 23:40:02 2021
    Hi Nilesh, Andrey,

    Nilesh Patra <nilesh@nileshpatra.info> writes:
    On 10/30/21 5:50 PM, Ole Streicher wrote:
    Hi,
    https://salsa.debian.org/debian-astro-team/pyraf/-/jobs/2130878#L2062
    How can one find out the correct machine here?

    I just committed something to salsa -- sort of a hack, but it works
    (i386 pipeline passes). I do this
    for one of my other package as well. Please consider taking a look.

    Thank you, but I think I will not use it: This requires dpkg-dev (which
    is the package with dpkg-architecture) being installed, which I would
    not like to depend on just to have the possibility to test.

    I will rather follow Stefanos hint to use sys.implementation._multiarch,
    which is however hackish as well, since variables starting with "_"
    should not considered as part of the API, and this may break without
    warning.

    Optimal would be a way to detect whether the internal floating point
    processing happens with 80 bit FPU registers (i386) or 64 bit FPU
    registers (other systems), since this is the relevant difference here.

    Best regards

    Ole

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  • From Thomas Goirand@21:1/5 to Andrey Rahmatullin on Sun Oct 31 02:20:02 2021
    On 10/30/21 8:43 PM, Andrey Rahmatullin wrote:
    On Sat, Oct 30, 2021 at 02:20:40PM +0200, Ole Streicher wrote:
    I have a package (pyraf) where I need to switch off some tests for i386
    (but not for other 32-bit platforms). I do this by

    import platform
    is_i386 = platform.machine() in ('i386', 'i486', 'i586', 'i686')
    Yup, this is incorrect. This is the same as `uname -m` and so returns the kernel architecture.
    If you want to do this purely at the upstream side without checking DEB_HOST_ARCH, AFAIK there is no 100% reliable way to do this.

    I would also advise to use DEB_HOST_ARCH... Maybe with some fallbacks if
    you wish to upstream it?

    Cheers,

    Thomas Goirand (zigo)

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