Bash PS1 with Git and Virtualenv support.

bash_ps1

# PS1 (prompt) colors (colornames refer to jwr theme)
DF="\e[0m"    # refault
BW="\e[1;37m" # bold white
BR="\e[1;31m" # bold red
BB="\e[1;34m" # bold blue
BC="\e[1;32m" # bold cyan
BL="\e[1;33m" # bold light red
[[ -n "$SSH_CLIENT" ]] && HC=$BR || HC=$BB

# prepare bash prompt git support
GIT_PROMPT_SH="/usr/share/git/completion/git-prompt.sh"
if [[ -x /usr/bin/git && -f $GIT_PROMPT_SH ]]; then
	export GIT_PS1_SHOWDIRTYSTATE=1
	export GIT_PS1_SHOWSTASHSTATE=1
	export GIT_PS1_SHOWUNTRACKEDFILES=1
	export GIT_PS1_SHOWUPSTREAM=1
	source $GIT_PROMPT_SH
	GIT='$(__git_ps1 "─['$BR'%s'$DF']")'
fi

# prepare python virtual env (and it's prompt support)
VEV_WRAPPER_SH="/usr/bin/virtualenvwrapper.sh"
if [[ -x /usr/bin/virtualenv && -f $VEV_WRAPPER_SH ]]; then
	export VIRTUAL_ENV_DISABLE_PROMPT=1
	export WORKON_HOME="${HOME}/Development/virtualenvs"
	mkdir -p "$WORKON_HOME"
	source $VEV_WRAPPER_SH

	function __venv_ps1 {
		if [[ -n $VIRTUAL_ENV ]]; then
			echo -e "─[${BL}$(basename $VIRTUAL_ENV)$DF]"
		fi
	}
	VEV="\$(__venv_ps1)"
fi

# assemble the PS1
function set_bash_prompt {
	PS1='┌─['$BW'\u'$DF'@'$HC'\h'$DF']─['$BC'\w'$DF']'$VEV''$GIT'\n└─╼ '
}
PROMPT_COMMAND="$PROMPT_COMMAND; set_bash_prompt"