{
  stdenv,
  iosevka,
  nerd-font-patcher,
}:
let
  custom-build-plan = import ./custom-build-plan.nix;
  names = import ./names.nix;
in
{
  iosevka-custom-aile = iosevka.override {
    set = "aile";
    privateBuildPlan = custom-build-plan // {
      family = names.iosevka-custom-aile;
      spacing = "quasi-proportional";
      serifs = "sans";
    };
  };
  iosevka-custom-etoile = iosevka.override {
    set = "etoile";
    privateBuildPlan = custom-build-plan // {
      family = names.iosevka-custom-etoile;
      spacing = "quasi-proportional";
      serifs = "slab";
    };
  };
  iosevka-custom-nerdfont =
    let
      monospace = iosevka.override {
        set = "custom";
        privateBuildPlan = custom-build-plan // {
          family = names.iosevka-custom-nerdfont;
          spacing = "normal";
          serifs = "sans";
        };
      };
    in
    stdenv.mkDerivation {
      name = "${monospace.name}-nerd-font-patched";
      src = monospace;
      nativeBuildInputs = [ nerd-font-patcher ];
      buildPhase = ''
        find \( -name \*.ttf -o -name \*.otf \) -execdir nerd-font-patcher -c {} \;
      '';
      installPhase = "cp -a . $out";
    };
}