[Mne_analysis] install fails missing cython

Eric Larson larson.eric.d at gmail.com
Tue Jul 17 08:34:19 EDT 2018
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Usually these messages about Cython are non-fatal warnings rather than
errors. Does the environment work? You can check at a very basic level with
with something like:

$ source activate mne
$ python -c "import mne; mne.sys_info()"

This should succeed and print a list of libraries, and then you can move on
to trying some examples.


On Tue, Jul 17, 2018 at 4:24 AM Maximilien Chaumon <
maximilien.chaumon at gmail.com> wrote:

>         External Email - Use Caution
> Hi everyone,
> A problem I've had in the past:
> Install on a fresh ubuntu (mint) install following instructions
> https://martinos.org/mne/stable/install_mne_python.html#install-dependencies-and-mne
> fails with these messages:
> mkl-random 1.0.1 requires cython, which is not installed.
> mkl-fft 1.0.2 requires cython, which is not installed.
> Installed cython with apt install, now it is present on my system.
> Problem 1:
> conda env create -f environment.yml
> fails saying
> CondaValueError: prefix already exists:
> /home/maximilien.chaumon/anaconda3/envs/mne
> Fair enough. After total removal of anaconda and settings, check cython is
> installed, reinstall after reboot, same fail, complaining cython isn't
> there.
> In any case, it seems that ubuntu doesn't ship with cython, so it may be a
> good idea to add an install procedure to the instructions.
> Any help much appreciated.
> Max
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