Backing up my favourite fish prompt. A modification of the gentoo omf theme.

og_fish_prompt.fish

function _virtualfish
  if set -q VIRTUAL_ENV
    echo -n -s (set_color white) "(" (basename "$VIRTUAL_ENV") ")" (set_color normal) " "
  end
end

function fish_prompt
  set fish_greeting
  set -l cyan (set_color -o cyan)
  set -l red (set_color -o red)
  set -l blue (set_color -o blue)
  set -l green (set_color -o green)
  set -l normal (set_color normal)
  _virtualfish
  set -l cwd (pwd | sed -e "s!^$HOME!~!g")
  # output the prompt, left to right:
  # if [ (id -u) = "0" ];
  #   set cwd (basename $cwd)
  #   # display host
  #   echo -n -s $red (hostname|cut -d . -f 1) " "
  # else
  #   # display 'user@host:'
  #   echo -n -s $green (whoami) @ $green (hostname|cut -d . -f 1) " "
  # end

  echo -n -s "🌎 "

  # display the current directory name:
  echo -n -s $blue $cwd $normal

  # show git branch and dirty state, if applicable:
  if [ (_git_branch_name) ]
    set -l git_branch '[' (_git_branch_name) ']'

    if [ (_is_git_dirty) ]
      set git_info $red $git_branch "×"
    else
      set git_info $cyan $git_branch
    end
    echo -n -s ' ' $git_info $normal
  end

  # terminate with a nice prompt char:
  if [ (id -u) = "0" ];
    set indicate '#'
  else
    set indicate '🍄'
  end
  echo -n -s $blue " $indicate " $normal
end