Script for quickly pulling up a working Haskell environment on Gitpod

hsinit

#! /bin/bash
install() {
  local tool=$1
  if [ -z $tool ]; then
    tool=ghc
  fi
  local version=$2
  if [ -z $version ]; then
    version=recommended
  fi
  ghcup install $1 $2
}

install_ghcup() {
  hash ghcup >/dev/null 2>/dev/null
  if [ $? -gt 0 ]; then
    curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | BOOTSTRAP_HASKELL_NONINTERACTIVE=1 BOOTSTRAP_HASKELL_MINIMAL=1 sh
  fi
  echo -e "\nsource /home/gitpod/.ghcup/env" >> /home/gitpod/.bashrc
  source /home/gitpod/.ghcup/env
  if [ ! -f /usr/bin/ghcup ]; then
    sudo ln /home/gitpod/.ghcup/bin/ghcup /usr/bin/ghcup
  fi
}

if [ -z $1 ]; then
  install_ghcup
  install ghc
  install cabal
  install stack
  install hls
  stack config set install-ghc false --global
  stack config set system-ghc true --global
else
  install $1 $2
fi