Pass through the architecture on OS X about nox

[theacodes]

I think the idea of preserving the arch through all commands is the right thing to do, but what's the right way to do it?

[dhermes]

I think the "right" way is:

$ arch -32 ...
$ arch -i386 ...  # Synonym for -32
$ arch -64 ...
$ arch -x86_64 ...  # Synonym for -64

[theacodes]

as a prefix to literally everything we execute?

[dhermes]

Only on OS X, but maybe? It's possible there is a way to "inherit"?

[theacodes]

It's possible there is a way to "inherit"?

That would be ideal. It seems weird to me that a 32bit process is able to create a 64bit subprocess (considering exec is forking).

[dhermes]

It turns out a similar feature might be relevant on Windows:

C:\Users\dhermes\Desktop>py -2.7-32 info.py
exe: C:\Python27-32\python.exe
sys.maxsize == 2**(31) - 1

C:\Users\dhermes\Desktop>py -2.7 info.py
exe: C:\Python27\python.exe
sys.maxsize == 2**(63) - 1

C:\Users\dhermes\Desktop>py -3.5-32 info.py
exe: C:\Users\dhermes\AppData\Local\Programs\Python\Python35-32\python.exe
sys.maxsize == 2**(31) - 1

C:\Users\dhermes\Desktop>py -3.5 info.py
exe: C:\Users\dhermes\AppData\Local\Programs\Python\Python35\python.exe
sys.maxsize == 2**(63) - 1

C:\Users\dhermes\Desktop>py -3.6-32 info.py
exe: C:\Users\dhermes\AppData\Local\Programs\Python\Python36-32\python.exe
sys.maxsize == 2**(31) - 1

C:\Users\dhermes\Desktop>py -3.6 info.py
exe: C:\Users\dhermes\AppData\Local\Programs\Python\Python36\python.exe
sys.maxsize == 2**(63) - 1

where

# info.py
import sys


def main():
    print('exe: {}'.format(sys.executable))
    if sys.maxsize == 2**31 - 1:
        print('sys.maxsize == 2**(31) - 1')
    elif sys.maxsize == 2**63 - 1:
        print('sys.maxsize == 2**(63) - 1')
    else:
        print('sys.maxsize == {}'.format(sys.maxsize))


if __name__ == '__main__':
    main()

See also #63 (comment)

[theacodes]

@dhermes it seems with #100 this is no longer relevant, am I missing something?

[dhermes]

#100 only added architecture support on Windows

[theacodes]

So what needs to be done for OS X? Is 32bit even relevant for OS X?

[dhermes]

I don't really think so. NumPy has dropped support for 32-bit binaries on OS X.

[theacodes]

I'm going to close this, then.