[Neuroimaging] [dipy] [google hangout] Issues trying to install dipy

[Jon Haitz Legarreta]

Hi there,
yep, that's right. Thanks for the follow-up message, Eleftherios, and sorry
for lagging behind with the answer.

The procedure we followed is the one Eleftherios described.

We also created an environment variable called PYTHONPATH pointing to the
location where the dipy sources reside in my machine. I don't know whether
this was strictly necessary in the end.

I run the automatic tests with the following results:
run: 539;
skipped=3, errors=2, failures=1

I guess it's OK.

In my case, I was not particularly put off by the apparent dependency on
VS, since anyways sooner or later I was to install it for other C++
developments.

Now, this is feed for thought: although VS Community Edition is free, as it
seems from the effort we made, it looks like we need to install the entire
tool. I ignore whether other "lighter" solutions exist. Since Anaconda kept
looking for the VS compiler, although I explicitly set to use its built-in
MinGW32, so it looks unavoidable. But I guess it would be interesting to
find the root of the issue or to find a workaround to avoid such a heavy
dependency.

I ignore whether this issue is new on Win 10 systems (may be it was already
present on Win 8?), or specific to the Anaconda distributions I downloaded,
or a combination of both. We tried both with a Anaconda with Python 2.7 and
3.0 versions with similar concerns.

The related question I posted [1] to the Anaconda mailing list is still
unanswered.

Thanks for the effort Elefhterios.
JON HAITZ

[1]
https://groups.google.com/a/continuum.io/forum/#!searchin/anaconda/dipy/anaconda/eQcYKQubSJ8/Dd4Wt4FPAwAJ

--

On 22 June 2016 at 16:57, Eleftherios Garyfallidis <garyfallidis at gmail.com>
wrote:

> Hi all,
>
> Just wanted to give you a quick feedback about the meeting we had with Jon
> to try and install DIPY for development work in Windows 10 (64bit) using an
> Anaconda installation.
>
> What we found is that if you are using recent Anaconda in Windows you do
> not need to install mingw or libpython (with conda). All you need after or
> before installing Anaconda is to install one of the free versions (or not)
> of the Visual C++ compiler (e.g. community edition). After that then cython
> will find the correct compiler and build the shared objects with no problem.
> So, in summary the steps are:
> 1. Install Anaconda for your windows version.
> 2. Install Visual C++ (or Studio) community edition (or other).
> 3. pip install nibabel
> 4. conda install vtk
> 5. cd dipy;
> 6. python setup.py develop (or python setup.py build_ext --inplace)
>
> I hope this helps. We need to update our installation page! Cygwin/mingw
> is no more for anaconda users. We should also check what happens with
> Openmp when Visual C++ is used.
>
> Many thanks to Jon for reporting the problem.
>
> Best regards,
> Eleftherios
>
>
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