shell: |
  # set PATH to use GHCUP installed GHC
  export PATH=~/.cabal/bin:~/.ghcup/bin:$PATH
  export PATH=~/.radicle/bin:$PATH

  USER=$(id -un)
  HOME=$(getent passwd "$USER" | cut -d: -f6)

  ghc --version
  cabal --version

  cd lambda-calcul/haskell
  cabal test all