Drops you into a tmux session with two windows, one window editing a skeleton Haskell module, the the other one a ghcid session with the module loaded

ghcid-session.sh

#!/bin/bash

set -e

if [ $# -eq 0 ]
  then
  echo "No arguments supplied"
  exit 1;
fi

dir=$HOME/projects/hask-play
cd $dir

date_tag=$(date "+%Y%m%d")
module="$1_${date_tag}"
file="${module}".hs
session="$1"
window1="vim"
window2="ghcid"

if test -f "${dir}/${file}"; then
  echo "${file} already exists: use a different name"
  exit 1;
fi


ghcid_cmd="ghcid -c \"stack ghci ${file}\""

cat << ENDOFFILE > "${dir}/$file"
{- stack
 --resolver lts-17.10
 --install-ghc exec ghci
 --package "text"
-}

{-# Language LambdaCase #-}

{- ${ghcid_cmd} -}

module ${module} where

import Prelude

main :: IO ()
main = undefined
ENDOFFILE

tmux new-session -d -s $session -n "${window1}" -c $dir
tmux send-keys -t "=${session}:=${window1}" "vi ${file}" Enter

tmux new-window -d -t "=${session}" -n "${window2}"  -c $dir
tmux send-keys -t "=${session}:=${window2}" "${ghcid_cmd}" Enter

tmux attach-session -t "${session}"