grub4dos: remove broken package

grub4dos has been marked broken since NixOS 24.05 and remains unfixed.
Per RFC 180, packages broken for a full release cycle are subject
to removal.

https://github.com/NixOS/rfcs/pull/180

pkgs/tools/misc/grub4dos/default.nix

@@ -1,56 +0,0 @@
-{
-  lib,
-  stdenv,
-  fetchFromGitHub,
-  nasm,
-}:
-
-let
-  arch =
-    if stdenv.hostPlatform.isi686 then
-      "i386"
-    else if stdenv.hostPlatform.isx86_64 then
-      "x86_64"
-    else
-      throw "Unknown architecture";
-in
-stdenv.mkDerivation {
-  pname = "grub4dos";
-  version = "0.4.6a-2019-05-12";
-
-  src = fetchFromGitHub {
-    owner = "chenall";
-    repo = "grub4dos";
-    rev = "e8224a2d20760139ffaeafa07838e2c3c54de783";
-    sha256 = "0i7n71za43qnlsxfvjrv1z5g1w5jl9snpbnas7rw97rry7cgyswf";
-  };
-
-  nativeBuildInputs = [ nasm ];
-
-  hardeningDisable = [ "stackprotector" ];
-
-  configureFlags = [ "--host=${arch}-pc-linux-gnu" ];
-
-  postInstall = ''
-    mv $out/lib/grub/${arch}-pc/* $out/lib/grub
-    rmdir $out/lib/grub/${arch}-pc
-    chmod +x $out/lib/grub/bootlace.com
-  '';
-
-  dontStrip = true;
-  dontPatchELF = true;
-
-  # make[2]: *** No rule to make target 'pre_stage2_fullsize', needed by 'all-am'.  Stop.
-  enableParallelBuilding = false;
-
-  meta = {
-    homepage = "http://grub4dos.chenall.net/";
-    description = "GRUB for DOS is the dos extension of GRUB";
-    maintainers = [ ];
-    platforms = lib.platforms.linux;
-    license = lib.licenses.gpl2Plus;
-    # Needs a port to modern binutils:
-    #   https://github.com/chenall/grub4dos/issues/160
-    broken = true;
-  };
-}

pkgs/top-level/aliases.nix

@@ -823,6 +823,7 @@ mapAliases {
   graphite-kde-theme = throw "'graphite-kde-theme' has been removed, as it is only compatible with Plasma 5, which is EOL"; # Added 2025-08-20
   gringo = throw "'gringo' has been renamed to/replaced by 'clingo'"; # Converted to throw 2025-10-27
   grub2_full = throw "'grub2_full' has been renamed to/replaced by 'grub2'"; # Converted to throw 2025-10-27
+  grub4dos = throw "'grub4dos' has been removed due to being broken for more than a year; see RFC 180"; # Added 2026-02-05
   gscrabble = throw "'gscrabble' has been removed, as it is unmaintained upstream, and broken in nixpkgs"; # Added 2026-01-03
   gsettings-qt = lomiri.gsettings-qt; # Added 2025-12-06
   gtkcord4 = throw "'gtkcord4' has been renamed to/replaced by 'dissent'"; # Converted to throw 2025-10-27

pkgs/top-level/all-packages.nix

@@ -2601,10 +2601,6 @@ with pkgs;
     grubPlatform = "xen";
   };
 
-  grub4dos = callPackage ../tools/misc/grub4dos {
-    stdenv = stdenv_32bit;
-  };
-
   gruut = with python3.pkgs; toPythonApplication gruut;
 
   gruut-ipa = with python3.pkgs; toPythonApplication gruut-ipa;