# See nixos.org/nix/manual/#sec-expression-syntax { stdenv, fetchurl, perl }: # 1

stdenv.mkDerivation { # 2

name = "hello-2.1.1"; # 3
builder = ./builder.sh; # 4
meta = rec {
  name = "rouge";
  version = "${name}-2.1.1";
  number = 55 + 12;
  isSmaller = number < 42;
  bool = true;
};
src = fetchurl { # 5
  url = ftp://ftp.nluug.nl/pub/gnu/hello/hello-2.1.1.tar.gz; # path
  md5 = "70c9ccf9fac07f762c24f2df2290784d";
};
inherit perl; # 6

}