Create Virtual or conda environment from file.txt

Virtual environment

• sudo apt install virtualenv
• virtualenv venv to create new virtual environment called 'venv'
• source venv/bin/activate
• pip install -r requirements.txt

Conda

• Detailed instructions available here

The highlights are

• conda list --explicit
• conda list --explicit > spec-file.txt

To use the spec file to create an identical environment on the same machine or another machine:

• conda create --name myenv --file spec-file.txt

To use the spec file to install its listed packages into an existing environment:

• conda install --name myenv --file spec-file.txt

My conda environment is available here