Simple Nix Shell

shell.nix

let
  nixpkgs = fetchTarball "https://github.com/NixOS/nixpkgs/tarball/nixos-unstable";
  pkgs = import nixpkgs { config = {}; overlays = []; };
in

pkgs.mkShellNoCC {
  packages = with pkgs; [
    neovim
    cowsay
    lolcat

    libuuid
  ];

  LANG = "C";
  LC_ALL = "C";
  LANGUAGE = "C";

  GREETING = "Hello, Nix!";

  shellHook = ''
    export LD_LIBRARY_PATH="${pkgs.lib.makeLibraryPath [ pkgs.libuuid ]}:$LD_LIBRARY_PATH"
  
    echo $GREETING | cowsay | lolcat
  '';
}