Setup Python 3 Environment

Existing Miniconda/Anaconda Installations

1. Create a new environment with python 3

   conda create -n eman-deps-15 eman-deps=15 -c cryoem/label/py3 -c cryoem -c defaults -c conda-forge

2. Use the activation command printed at the end of the previous command's run to activate the new conda environment

   conda activate eman-deps-15
   or
   source activate eman-deps-15

3. To switch to another conda environment, first deactivate your current environment

   conda deactivate
   or
   source deactivate

New Miniconda Installations

1. Download and install Miniconda.

2. Add the new installation to PATH.

   export PATH=<new miniconda path>/bin:$PATH

3. Update conda

   conda update conda -c defaults

4. Install eman-deps with python 3

   conda install eman-deps=15 -c cryoem/label/py3 -c cryoem -c defaults -c conda-forge

Build

1. Update eman2 source

   cd <source directory>
   git checkout py3-dev
   git pull --rebase

2. Activate the python 3 environment, if it is a conda environment

   conda activate eman-deps-15
   or
   source activate eman-deps-15

   or edit PATH to have the miniconda installation with python 3 as the first entry.

3. Move into your build directory

   cd <python 3 build directory>

4. Build and install

   cmake <eman2 source directory>
   make
   make install