venv

install.sh

#!/bin/bash
set -eo pipefail

. ./uninstall.sh
echo "$script_line" >> ~/.bashrc
mkdir -p "$HOME/.local/var/venv/"

uninstall.sh

#!/bin/bash
set -eo pipefail

path="$PWD"
script_line="source $PWD/venv"
cp ~/.bashrc ~/.bashrc.bak
cat ~/.bashrc | grep -v "${script_line}" > tmp && mv tmp ~/.bashrc
rm -rf "$HOME/.local/var/venv"

venv

#!/bin/bash

venv () {
  if [ -z "${1:-}" ]; then
    cat <<EOF
  usage:
    venv create <name>   create virtualenv named <name>
    venv create2 <name>  create virtualenv named <name> for python2
    venv load [name]     load virtualenv [name] (default: load from .venv file)
    venv unload          unload virtualenv
    venv delete <name>   delete virtualenv named <name>
    venv ls              list available virtualenvs
    venv install         install venv
    venv uninstall       uninstall venv
EOF
    return
  fi

  if [ "$1" == "create" ]; then
    virtualenv -p /usr/bin/python3 "$HOME/.local/var/venv/${2:-$(cat .venv)}"
    venv load "${2:-$(cat .venv)}"
  elif [ "$1" == "create2" ]; then
    virtualenv -p /usr/bin/python2 "$HOME/.local/var/venv/${2:-$(cat .venv)}"
    venv load "${2:-$(cat .venv)}"
  elif [ "$1" == "load" ]; then
    if [ "$2" == "." -o -z "$2" ]; then
      if [ ! -f ".venv" ]; then
        echo "no such file .venv"
      else
        source "$HOME/.local/var/venv/$(cat .venv)/bin/activate"
        CURRENT_VENV="$(cat .venv)"
      fi
    else
      source "$HOME/.local/var/venv/${2:-default}/bin/activate"
      CURRENT_VENV="${2:-default}"
    fi
  elif [ "$1" == "unload" ]; then
    if [ -z "$CURRENT_VENV" ]; then
      echo "no such venv loaded"
    else
      "$HOME/.local/var/venv/$CURRENT_VENV/bin/deactivate"
    fi
  elif [ "$1" == "delete" ]; then
    rm -rf "$HOME/.local/var/venv/${2:-$(cat .venv)}"
  elif [ "$1" == "ls" ]; then
    shift
    ls -1 ~/.local/var/venv
  elif [ "$1" == "install" ]; then
    mkdir -p ~/.local/bin
    mkdir -p ~/.local/var/venv
  elif [ "$1" == "uninstall" ]; then
    rm -rf ~/.local/var/venv
  else
    echo "error: no such command: $1" >&2
    return 1
  fi
}