On my system, i run into this with:

  system.replaceDependencies.replacements =
    let
      aspell' = pkgs.aspell.overrideAttrs (old: {
        postFixup = (old.postFixup or "") + ''
          rm $out/bin/aspell-import
        '';
      });
    enchant' = pkgs.enchant.override {
      withHspell = false;
      aspell = aspell';
    };
    in
    [
      {
        oldDependency = pkgs.enchant.dev;
        newDependency = enchant'.dev;
      }
      {
        oldDependency = pkgs.enchant.out;
        newDependency = enchant'.out;
      }
      {
        oldDependency = pkgs.aspell;
        newDependency = aspell';
      }
    ];
environment.systemPackages = [ pkgs.webkitgtk_6_0 ];

(well, the package isn't actually webkitgtk, but that is what pulls these deps)

In reply to @maralorn:maralorn.de
What is this witchery?^^