[Repronim-trd3] Best way to determine conda architecture?

[Yaroslav Halchenko]

On Mon, 05 Mar 2018, Robert Buccigrossi wrote:

> Dear Niceman Gurus,

>   To address #195, I'd like to find the conda architecture.  Of course, the
> trick is how :)

> *Option 1: Getting the platform from "conda info -a"*

>   The command "conda info -a --json" does report the "platform" (like
> "linux-64") so

I would have tried on different deployments (e.g. 32bit miniconda as
well) to just rule out it being system's platform.

another option is just to ask conda's python:

$> ~/anaconda-4.4.0-3.6//bin/python -c 'import platform; print(platform.architecture())'
('64bit', 'ELF')

but hopefully it is the same as option 1 and that one could be used.

> *Option 2: Getting the architecture from conda's conda-meta JSON entry*

>   I can see the architecture in the JSON file for the "conda" package in
> the "conda-meta" directory (specifically in my recent install I see that
> conda-meta/conda-4.4.10-py27_0.json has "arch": "x86_64") .  So I know that
> I can use:

>   conda list --json -f conda

>  to get the "dist_name" (which on my system is "conda-4.4.10-py27_0"), and
> then use that to construct the json filename and read it from conda-meta to
> get the arch.

>   Is there any preference?  Left to my own devices, I'd grab the platform
> with Option 1...

> Butch
-- 
Yaroslav O. Halchenko
Center for Open Neuroscience     http://centerforopenneuroscience.org
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