Hi, Short version: We are planning to drop 32-bit compatibility from the numpy macOS wheels. This email is to ask for feedback. Long version: macOS has tooling to allow distribution of binaries that have objects for more than one architecture. These are called "fat" binaries, and they were useful when Macs could be PPC, 32-bit or 64-bit intel. Now of course, they are effectively all 64-bit Intel. Amusingly enough, you can use the "lipo" command to operate on fat binaries. For example, system Python (at /usr/bin/python) is a fat binary, containing objects for 32 and 64-bit. $ lipo -info /usr/bin/python Architectures in the fat file: /usr/bin/python are: i386 x86_64 It is possible to run Python in 32-bit mode with: $ arch -i386 /usr/bin/python Up until the last release of numpy, we have build fat (32 and 64 bit) binaries for numpy, so, if you do run Python in 32-bit mode, you can still import and use numpy. In the last release, I accidentally broke the 32-bit part of the build - see https://github.com/numpy/numpy/issues/11625 . We could fix this, but we suspect that there are very few people still using 32-bit on macOS. If you do use it - please let us know, and we'll consider the options. Cheers, Matthew
On Tue, Aug 14, 2018 at 2:17 AM, Matthew Brett <matthew.brett@gmail.com> wrote:
We are planning to drop 32-bit compatibility from the numpy macOS wheels.
+1 -- it really is time. I note that python.org has finally gone 64 bit only -- at least for the default download: """ For 3.7.0, we provide two binary installer options for download. The default variant is 64-bit-only and works on macOS 10.9 (Mavericks) and later systems. """ granted, it'll be quite a while before everyone is running 3.7+, but still. -CHB -- Christopher Barker, Ph.D. Oceanographer Emergency Response Division NOAA/NOS/OR&R (206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception Chris.Barker@noaa.gov
On Tue, Aug 14, 2018 at 2:17 AM, Matthew Brett <matthew.brett@gmail.com> wrote:
We are planning to drop 32-bit compatibility from the numpy macOS wheels.
+1 -- it really is time. I note that python.org has finally gone 64 bit only -- at least for the default download: """ For 3.7.0, we provide two binary installer options for download. The default variant is 64-bit-only and works on macOS 10.9 (Mavericks) and later systems. """ granted, it'll be quite a while before everyone is running 3.7+, but still. -CHB -- Christopher Barker, Ph.D. Oceanographer Emergency Response Division NOAA/NOS/OR&R (206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception Chris.Barker@noaa.gov
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