Reading nixpkgs/flake.nix at 78cb77b29d37a9663e05b61abb4fa09465da4b70 · NixOS/nixpkgs · GitHub I noticed that
import ./nixos/lib/eval-config.nix is used 3 times.
Why it wasn’t just assigned like
evalConfig = import ./nixos/lib/eval-config.nix in the highest
let..in and then used from that name?
flakes has not yet the “same” (structural) capabilities like standard nix.
This is not related.
In the snippet given, it should totally be possible to have an extra binding between lines 7 and 18.
Though it seems as if this question became irrelevant, as in the last 2 years since this post was created the
flake.nix got refactored, such that
eval-config.nix is only imported a single time.