top-level/by-name-overlay: remove optimization TODO (#454148)

  # if the overlay has to be applied multiple times

  packageFiles = mergeAttrsList (mapAttrsToList namesForShard (readDir baseDirectory));

in

# TODO: Consider optimising this using `builtins.deepSeq packageFiles`,

# which could free up the above thunks and reduce GC times.

# Currently this would be hard to measure until we have more packages

# and ideally https://github.com/NixOS/nix/pull/8895

self: super:

{

  # This attribute is necessary to allow CI to ensure that all packages defined in `pkgs/by-name`