core/pkgs/pkgs-lib/default.nix

# pkgs-lib is for functions and values that can't be in lib because
# they depend on some packages. This notably is *not* for supporting package
# building, instead pkgs/build-support is the place for that.
{ lib, pkgs }:
{
  # setting format types and generators. These do not fit in lib/types.nix,
  # because they depend on pkgs for rendering some formats
  formats = import ./formats.nix { inherit lib pkgs; };
}