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Background

Miniconda is a free minimal installer for conda. It is a small, bootstrap version of Anaconda that includes only conda, Python, the packages they depend on, and a small number of other useful packages, including pip, zlib and a few others. Use the conda install command to install 720+ additional conda packages from the Anaconda repository.

Challenges and Solutions

1. How to install a specific package?

   1. Users can not and should not install packages in existing python environments.

      1. Lists of Existing Anaconda Environments

   2. Users need to create their own python environment to install their own packages.

      1. Create a New Env from Existing Environment.

      2. Create Conda Environment from Scratch.

   3. Users should search for all the available packages before installation.
      

      1. Search Packages in All Default Channels.

      2. Search Packages in a Specific Channel.

   4. Users could install a specific python package to avoid conflict or add functionality.

      1. Install a Package with a Specific Version and Build Code.

2. How to solve dependency conflict?

   1. The conda has the capability to solve some dependency conflicts, but it cost time and is not guaranteed to work.

   2. Users could create a python environment from scratch, then

      1. Install the package which caused the conflict first.

      2. Install other packages according to the conflicting package requirement.

3. How to use Customized Python Environment in HAL-OnDemand?

   1. Users need to install conda install ipykernel in order to select and/or switch their own conda environment in HAL-OnDemand.
      

Lists of Existing Anaconda Environments 

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list_envs list_envs

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conda create --name=<newnew_env>env --clone=opence-v1.5.1

The new Conda environment will be located within $HOME/.conda/envs/<newnew_env>env, then users can search and/or install python packages via Conda

conda search r-tensorflow

Create Conda Environment from Scratch

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new_env new_env

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conda create --name=<newnew_env_name>name

Search Packages in All Default Channels

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all_channels all_channels

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Install a package from the result of the search

(<newnew_env_name>name)[<useruser_id>@halid@hal-login2 ~]# conda search openblas
...
openblas                      0.3.12      pthreads_hca0ad1f_0  conda-forge         
openblas                      0.3.12      pthreads_hca0ad1f_1  conda-forge         
openblas                      0.3.13      h6ffa863_0           pkgs/main           
openblas                      0.3.13      h6ffa863_1           pkgs/main           
openblas                      0.3.13      openmp_h25a920f_0    conda-forge         
openblas                      0.3.13      pthreads_h92053e5_0  conda-forge
...
(<newnew_env_name>name)[<useruser_id>@halid@hal-login2 ~]# conda install openblas=0.3.13=openmp_h25a920f_0

...