Dependencies and packages conflicts in Anaconda?
You could try disabling transitive deps updates by passing --no-update-dependencies or --no-update-deps to conda install command. Ex: 
conda install --no-update-deps pandas.
I'm using Anaconda 5.1 and Python 3.6 on a Windows 10 machine.
I'm having quite a few problems ; I tried to add some useful tools such as lightGBM, tensorflow, keras, bokeh,... to my conda environment but once I've used
conda install -c conda-forge packagename
on all of these, I end up having downgrading and upgrading of different packages that just mess with my installation and I can't use anything anymore after those installations.
I wonder if it were possible to have multiples versions of packages & dependencies living alongside each other which won't kill my install?
Sorry if my question seems noobish and thanks for your help,
Nate