binder has sympy 1.0

[moorepants]

Need to change to master.

[bjodah]

I was thinking about sympy@master to our anaconda channel, maybe under a dev label, don't know how to reference that in environment.yml though

[isuruf]

dependencies:
  - pip:
    - https://github.com/sympy/sympy/archive/master.tar.gz

or if you want a specific commit,

dependencies:
  - pip:
    - https://github.com/sympy/sympy/archive/7efbee85cf49d767a11de8344b2b99b2b2460769.tar.gz

[moorepants]

One of the packages in the env.yml seems to have a dependency on sympy, so removing sympy and adding this creates a double install of sympy.

[bjodah]

It's python-symengine -- I was actually thinking about just that.

[moorepants]

That's interesting. It's sort of circular to have sympy be a dependency of python-symengine.

[bjodah]

I was wrong, it's only the tests that actually require SymPy: https://github.com/conda-forge/python-symengine-feedstock/blob/master/recipe/meta.yaml

[bjodah]

It is our own package... scipy2017codegen, so easily fixed. I'm on it.

[bjodah]

Now we have sympy@master in our binder environment. Thanks @isuruf!

I just realized that the Docker image that binder v2 comes with does not contain gcc. I'll add a separate environment.yml called environment-binder.yml which also lists gcc as a dependency. Because I think most people prefer relying on system provided compilers, right?