title_body: Plutus Pioneer Program - Lecture #1 Problem with cabal build
upvoted_answer: It looks like your cabal version is too old.
  You can make sure you have the right one if you first start a nix-shell at the top-level directory of the plutus-repository, then cd to the code folder of the plutus-pioneer-program-repository and run cabal build from within that nix-shell.