mambaforge installation & troubleshooting

[jenniferagraham]

Troubleshooting

Following points were raised around installation:

conda-forge not set as priority channel

To fix this, e.g.:

conda config --add channels conda-forge
conda config --remove channels github.com/python-pillow/Pillow

NB. Replace pillow with whatever other channel is set.

Error when trying to install environment?

If using the mambaforge prompt, do not type bash.

• This allows for use of the linux subsystem (associated CLI). However, this breaks the conda installation.
  • This appears as a "ConnectionRefusedError"

Instructions for reference

• Download the windows version of miniforge3 (with or without mamba installed in the base environment):
  • e.g. https://github.com/conda-forge/miniforge#mambaforge (for x86_64 architechture)
• Run the executable
  • Select “run anyway” when prompted for security issues.
  • If in doubt about any options, select all default/recommended choices when working through the install.
  • After finished, open the chosen prompt from your start menu (under Miniforge3)
• Change directory to the course materials: e.g.

cd C:\Users\JG10\OneDrive - CEFAS\python\Training2021\pythoncourse2021-materials

* If you don't have them already, you can download from here: https://github.com/ueapy/pythoncourse2021-materials

• The necessary modules/packages are all listed in the environment.yml files, so we create the environment from there, using the following command:

conda env create -f environment.yml

• If you're using mamba rather than miniforge, use the following command instead:

mamba env create -f environment.yml

• Once all installed, activate the environment:

conda activate course2021

• Open the course materials:

jupyter notebook