From 14aa201b658f43546b00153bb2ada7206ba8dd26 Mon Sep 17 00:00:00 2001
From: Robert Hensing <robert@roberthensing.nl>
Date: Thu, 7 Apr 2022 23:36:35 +0200
Subject: [PATCH] lib.modules: Allow making _module.args internal

This allows other module system consumers to
disable these docs via option merging.

For instance arion uses asciidoc instead of
docbook so that would look awful.
---
 lib/modules.nix | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/modules.nix b/lib/modules.nix
index abcdd1a894cc..b2f6c7376330 100644
--- a/lib/modules.nix
+++ b/lib/modules.nix
@@ -156,7 +156,10 @@ rec {
             type = types.lazyAttrsOf types.raw;
             # Only render documentation once at the root of the option tree,
             # not for all individual submodules.
-            internal = prefix != [];
+            # Allow merging option decls to make this internal regardless.
+            ${if prefix == []
+              then null  # unset => visible
+              else "internal"} = true;
             # TODO: Change the type of this option to a submodule with a
             # freeformType, so that individual arguments can be documented
             # separately