Script for installing a suite of local version managers for python, node, and ruby (pyenv, rbenv, nodenv)

every_env.sh

#!/bin/sh

HOME="/home/${USER}"
PROFILE="${HOME}/.profile"

install_env() {
  ENV_CMD="$1"
  ENV_URL="$2"
  ENV_ROOT="${HOME}/.${ENV_CMD}"
  ENV_CMD_ROOT="$(echo ${ENV_CMD} | tr /a-z/ /A-Z/)_ROOT"

  if [ ! -d "${ENV_ROOT}" ]; then
    git clone "${ENV_URL}" "${ENV_ROOT}"
    cd "${ENV_ROOT}" && src/configure && make -C src
    echo "export ${ENV_CMD_ROOT}/\"\$HOME/.${ENV_CMD}\"" >> ${PROFILE}
    echo "export PATH=\"\$${ENV_CMD_ROOT}/bin:\$PATH\"" >> ${PROFILE}
    echo "eval \"\$(${ENV_CMD} init -)\"" >> ${PROFILE}
  else
    echo "${ENV_CMD} already installed at ${ENV_ROOT}; skipping."
  fi
}

install_env_plugin() {
  ENV_CMD="$1"
  ENV_PLUGIN="$2"
  ENV_PLUGIN_URL="$3"
  ENV_PLUGIN_EXTRA="$4"
  ENV_PLUGIN_ROOT="$(${ENV_CMD} root)/plugins/${ENV_PLUGIN}"

  if [ ! -d "${ENV_PLUGIN_ROOT}" ]; then
    git clone "${ENV_PLUGIN_URL}" "$ENV_PLUGIN_ROOT"
    if [ ! -z "${ENV_PLUGIN_EXTRA}" ]; then
      echo "${ENV_PLUGIN_EXTRA}" >> ${PROFILE}
    fi
  else
    echo "${ENV_PLUGIN} already installed at ${ENV_PLUGIN_ROOT}; skipping."
  fi
}

if [ -z "$1" ]; then
  set -- pyenv pyenv-virtualenv rbenv ruby-build nodenv node-build
fi

ENV="$1"

while [ ! -z "${ENV}" ]; do
  if [ "${ENV}" == "pyenv" ]; then
    install_env pyenv \
      https://github.com/pyenv/pyenv.git
  elif [ "${ENV}" == "pyenv-virtualenv" ]; then
    install_env_plugin pyenv pyenv-virtualenv \
      https://github.com/pyenv/pyenv-virtualenv.git \
      'eval "$(pyenv virtualenv-init -)"'
  elif [ "${ENV}" == "rbenv" ]; then
    install_env rbenv \
      https://github.com/rbenv/rbenv.git
  elif [ "${ENV}" == "ruby-build" ]; then
    install_env_plugin rbenv ruby-build \
      https://github.com/rbenv/rbenv-build.git
  elif [ "${ENV}" == "nodenv" ]; then
    install_env nodenv \
      https://github.com/nodenv/nodenv.git
  elif [ "${ENV}" == "node-build" ]; then
    install_env_plugin nodenv node-build \
      https://github.com/nodenv/nodenv-build.git
  else
    echo "${ENV} not recognized."
  fi

  source "${PROFILE}"

  shift 1
  ENV="$1"
done