[xorbyte]

I think you may be confusing deterministic reproducible builds (that remove randomness and ensure binaries have the same content hash regardless of who builds them (so you can reproduce what the maintainers did and verify the source and binaries) to merely a repro'd environment where everything still works because deps are included, which seems to be all that Nix promises (and in fact there is at least one open issue to add full deterministic builds to Nix https://github.com/NixOS/nixpkgs/issues/9731 )