#!/bin/bash
get-ghc-v() {
    ghc --version | sed -e "s/.* version/GHC/"
}
get-pkg-v() {
    ghc-pkg list $1 2>/dev/null |
    grep " $1-" |
    sed -e "s/^ *//" |
    tail -1
}
get-ghc-v
get-pkg-v leancheck
get-pkg-v express
get-pkg-v speculate