geopandas: ImportError: libpoppler.so.76: cannot open shared object file: No such file or directory

[jmp75]

Trying to fix the travis build failure

import geopandas as gpd

after running unit tests in a new environment created with:

name: ela_test
channels:
  - conda
  - conda-forge
dependencies: 
  - rasterio=1.0.21
  - cartopy=0.17.0
  - geopandas=0.4.1
  - pandas=0.24.2
  - nltk=3.4.4
  - scikit-learn=0.21.2
  - matplotlib=3.1.0
  - vtk=8.2.0
  - pytest-cov=2.7.1
  - cython=0.29.12
  - coverage=4.5.3
  - wordcloud=1.5.0
  - pyqt=5.9.2
  - mayavi=4.7.1
  - codecov=2.0.15
  - pip
  - pip:
    #  - mayavi==4.7.1 # no need now that suitable conda pkg
    - git+https://github.com/jmp75/striplog@master#egg=striplog

[jmp75]

the environmrna ela_test hat the library libpoppler.so.83.0.0, Other environments with conda only as a channel and not conda-forge had libpoppler.so.76. Maybe pinning to particular versions is only something to do "after the fact" to freeze on something that works and version constraints not something to rely on to detect incompatibiliies