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Sometimes it is useful to install python packages that are not part of psana-python or install particular versions of a software package.  We have two recommended ways of doing this.  Both of these  These should be done from the "pslogin" machines since they have internet access.

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conda info --envs

Then activate the your new environment with:

source activate my-ana-1.3.10

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Note that package version dependency conflicts can make it impossible to install a specific version.  One possible way to address this is to remove the package requiring the conflicting version using:

conda remove <packagename>

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