Symlinking ghcup and cabal

README.md

This profile script makes ghcup and cabal packages persist across different lab clients, by symlinking the necessary haskell directories.

---

1. Put the above script inside your "profile" directory to be run on startup:

   On the school server:

   cd /cs/home/${USER}/.profile.d
   curl "https://gist.githubusercontent.com/niklasdewally/42c9862ff72fa2f0aa0e8271b2698f3e/raw/fb5c64f1a8ba68de181d933a39d0d2a39987f993/hs-links.sh" > hs-links.sh
   chmod +x hs-links.sh
   

   This will now run on startup on any CS machine, setting up the links to local home.

2. Run this script to setup the symlinks on your current session

   ./hs-links.sh
   

3. Install ghcup to the default location

   curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh
   

   Ensure to select Yes to installing Haskell Language Server

4. Restart your terminal

hs-links.sh

#!/usr/bin/env bash

DIRS=".ghcup .hoogle .cabal"


for dir in $DIRS; do
    NET_DIR="/cs/home/$USER/$dir"
    LOCAL_DIR="$HOME/$dir"

    # must be a directory in /cs/home/....
    if [[ ! -d "$NET_DIR" ]]; then
        rm -f "$NET_DIR"
        mkdir -p "$NET_DIR"
    fi

    # must not exist in /cs/home/....
    if [[ -e "$LOCAL_DIR" ]]; then
        rm -rf "$LOCAL_DIR"
    fi

    ln -sfn ${NET_DIR} ${LOCAL_DIR}
done