reproducable-hello.nix

{ pkgs ? import nixpkgs {}
, nixpkgs ? builtins.fetchTarball {
    url = "https://releases.nixos.org/nixpkgs/nixpkgs-20.03pre207249.7e8454fb856/nixexprs.tar.xz";
    sha256 = "1rdnhpvnchmws86lr6dq6bj14b166gnpj7n1sy6ps19vnmj6xfq9";
  }
}:

pkgs.hello.overrideDerivation (drv: {
  NIX_LDFLAGS = "-sdk_version 10.12 -no_uuid";
})

# $ nix-build
# /nix/store/8hvs8qk777cnvpsaj4paxaxyihrhwiw8-hello-2.10

# $ shasum -a256 result/bin/hello
# 078a7d9382c87753de2c2d4a25538dc0ed8a059cc8b5481a4d6df381abc2397b  result/bin/hello

# $ otool -l result/bin/hello
# ...