how to modify the anaconda environment prompt in zsh?

Question

To make my command line prompt look prettier on zsh, I added this line to .zshrc:

PROMPT='%F{green}%n%f %B%F{blue}%1~%f%b $ '

However, when I activate an anaconda virtual environment (i.e. conda activate base), I see the name of the virtual environment on the left like this:

(base) myusername ~ $

I wonder how I can modify the virtual environment part of the prompt (say we want to color it to cyan for example)

Answer 1

The first step is to disable the default conda prompt modifier by running conda config --set changeps1 false as they already mentioned.

Next, add the following to your .zshrc:

# Determines prompt modifier if and when a conda environment is active
precmd_conda_info() {
  if [[ -n $CONDA_PREFIX ]]; then
      if [[ $(basename $CONDA_PREFIX) == "miniconda3" ]]; then
        # Without this, it would display conda version
        CONDA_ENV="(base) "
      else
        # For all environments that aren't (base)
        CONDA_ENV="($(basename $CONDA_PREFIX)) "
      fi
  # When no conda environment is active, don't show anything
  else
    CONDA_ENV=""
  fi
}

# Run the previously defined function before each prompt
precmd_functions+=( precmd_conda_info )

# Allow substitutions and expansions in the prompt
setopt prompt_subst

PROMPT='%F{cyan}$CONDA_ENV%f%F{green}%n%f %B%F{blue}%1~%f%b $ '

With this, the conda environment is shown before the rest of the prompt, inside parentheses, and in cyan.

If you want it to appear bold, enclose that portion in %B and %b:

PROMPT='%B%F{cyan}$CONDA_ENV%b%f%F{green}%n%f %B%F{blue}%1~%f%b $ '

If you want to use more colours, check whether your terminal supports it by running echo $TERM. If it returns xterm-256color, you can replace the colours in curly brackets by values from 0 to 255. You can check out the colours here.

PS- Those using anaconda instead of miniconda will need to replace miniconda3 with anaconda3 in the code.

Answer 2

Run:

conda config --set changeps1 False

or add changeps1: False to your .condarc.