Is step 4 really required ? nix-shell already gives you a sandbox environment. Also their user manual[0] is really good now. [0]https://hydra.nixos.org/job/ni

Is step 4 really required ? nix-shell already gives you a sandbox environment. Also their user manual[0] is really good now. [0]https://hydra.nixos.org/job/nixpkgs/trunk/manual/latest/download-by-type/doc/manual#users-guide-to-the-haskell-infrastructure https://hydra.nixos.org/job/nixpkgs/trunk/manual/latest/down...