.envrc

#!/usr/bin/env bash

#- ensure virtual env
  PYTHON=python3
  if [ -r requirements.txt ]; then
    if [ ! -d ".env" ] ; then
      virtualenv .env -p $PYTHON
      .env/bin/pip install --upgrade pip
      .env/bin/pip install -r requirements.txt
      echo "direnv: created virtualenv in $PWD/.env with $($PYTHON -V)"
    fi
  fi

  if [ -r .env/bin/activate ]; then
    . .env/bin/activate
    echo "direnv: activated $($PYTHON -V) virtualenv in $PWD/.env"
  fi
  unset PYTHON

#- add ./bin if it exists
  if [ -d "./bin" ] ; then
    PATH="$PATH:$PWD/bin"
  fi

#- disable warnings about direnv not able to set PS1
#  see: https://github.com/direnv/direnv/wiki/PS1
  unset PS1

#- do a stable filtering to have each PATH only once in PATH
  _PATH="$PATH"
  PATH=
  while [ -n "$_PATH" ]; do
    p="${_PATH%%:*}"; _PATH="${_PATH#$p}"; _PATH="${_PATH#:}"
    [ -d "$p" ] || continue
    case "$PATH" in
      $p | $p:* | *:$p | *:$p:* ) ;;
      "" ) PATH="$p" ;;
      * ) PATH="$PATH:$p" ;;
    esac
  done
  unset p _PATH
  export PATH

# vim: sw=2 ts=2 et