nix-doc hacks: remove

Not required anymore :3

flake.nix

@@ -57,7 +57,7 @@
 
         checks = {
           inherit (self.packages.${system}) default nix-eval-jobs;
-          inherit (pkgs) nixos-option;
+          inherit (pkgs) nixos-option nix-doc;
         } // lib.optionalAttrs (lib.elem system linux64BitSystems) {
           # wrongMajor intentionally not included here since it is expected to fail
           inherit (self.nixosTests.${system}) it-builds;

nix-doc/package.nix

@@ -1,64 +0,0 @@
-# Temporary replacement of the nix-doc package with
-# https://github.com/NixOS/nixpkgs/pull/296523 so that we can have working Lix
-# with nix-doc on 23.11 and 24.05-pre
-#
-# Can be removed when that commit is in 23.11 and 24.05-pre, or 24.05 is
-# released with the commit.
-{ lib
-, stdenv
-, rustPlatform
-, fetchFromGitHub
-, boost
-, nix
-, pkg-config
-# Whether to build the nix-doc plugin for Nix
-, withPlugin ? true
-}:
-
-let
-  packageFlags = [ "-p" "nix-doc" ] ++ lib.optionals withPlugin [ "-p" "nix-doc-plugin" ];
-in
-rustPlatform.buildRustPackage rec {
-  pname = "nix-doc";
-  version = "0.6.5";
-
-  src = fetchFromGitHub {
-    rev = "v${version}";
-    owner = "lf-";
-    repo = "nix-doc";
-    sha256 = "sha256-9cuNzq+CBA2jz0LkZb7lh/WISIlKklfovGBAbSo1Mgk=";
-  };
-
-  doCheck = true;
-  buildInputs = lib.optionals withPlugin [ boost nix ];
-
-  nativeBuildInputs = lib.optionals withPlugin [ pkg-config nix ];
-
-  cargoBuildFlags = packageFlags;
-  cargoTestFlags = packageFlags;
-
-  # Packaging support for making the nix-doc plugin load cleanly as a no-op on
-  # the wrong Nix version (disabling bindnow permits loading libraries
-  # requiring unavailable symbols if they are unreached)
-  hardeningDisable = lib.optionals withPlugin [ "bindnow" ];
-  # Due to a Rust bug, setting -Z relro-level to anything including "off" on
-  # macOS will cause link errors
-  env = lib.optionalAttrs (withPlugin && stdenv.isLinux) {
-    # nix-doc does not use nightly features, however, there is no other way to
-    # set relro-level
-    RUSTC_BOOTSTRAP = 1;
-    RUSTFLAGS = "-Z relro-level=partial";
-  };
-
-  cargoSha256 = "sha256-CHagzXTG9AfrFd3WmHanQ+YddMgmVxSuB8vK98A1Mlw=";
-
-  meta = with lib; {
-    description = "An interactive Nix documentation tool";
-    longDescription = "An interactive Nix documentation tool providing a CLI for function search, a Nix plugin for docs in the REPL, and a ctags implementation for Nix script";
-    homepage = "https://github.com/lf-/nix-doc";
-    license = licenses.lgpl3Plus;
-    maintainers = [ maintainers.lf- ];
-    platforms = platforms.unix;
-    mainProgram = "nix-doc";
-  };
-}

overlay.nix

@@ -117,7 +117,7 @@ let
       }
     );
 
-    nix-doc = prev.callPackage ./nix-doc/package.nix { withPlugin = false; };
+    nix-doc = prev.nix-doc.override { withPlugin = false; };
   };
 in
 # Make the overlay idempotent, since flakes passing nixos modules around by