geopandas fails on binder

[JarnoRFB]

I tried to run the notebooks on binder, but on importing geopandas I get the following error

---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-1-05f10f3f66de> in <module>()
      2 
      3 import pandas as pd
----> 4 import geopandas
      5 
      6 pd.options.display.max_rows = 10

/srv/conda/lib/python3.6/site-packages/geopandas/__init__.py in <module>()
      2 from geopandas.geodataframe import GeoDataFrame
      3 
----> 4 from geopandas.io.file import read_file
      5 from geopandas.io.sql import read_postgis
      6 from geopandas.tools import sjoin

/srv/conda/lib/python3.6/site-packages/geopandas/io/file.py in <module>()
      1 import os
      2 
----> 3 import fiona
      4 import numpy as np
      5 

/srv/conda/lib/python3.6/site-packages/fiona/__init__.py in <module>()
     67 from six import string_types
     68 
---> 69 from fiona.collection import Collection, BytesCollection, vsi_path
     70 from fiona._drivers import driver_count, GDALEnv
     71 from fiona.drvsupport import supported_drivers

/srv/conda/lib/python3.6/site-packages/fiona/collection.py in <module>()
      7 
      8 from fiona import compat
----> 9 from fiona.ogrext import Iterator, ItemsIterator, KeysIterator
     10 from fiona.ogrext import Session, WritingSession
     11 from fiona.ogrext import (

ImportError: /srv/conda/lib/python3.6/site-packages/fiona/../../.././libkea.so.1.4: undefined symbol: _ZNK2H58H5Object13openAttributeERKSs

This looks a bit similar to #16

[ljwolf]

hi thanks for the report. Yes, this is broken due to some weird behavior that emerged recently between conda-forge and conda. We'll try to update the install environment shortly, but the fix at that issue should eventually resolve this if we can't fix it fast enough.