From 6975ee09f55b4a1518b76a31e3c9fe5b7618d3f3 Mon Sep 17 00:00:00 2001
From: Matt Sturgeon <matt@sturgeon.me.uk>
Date: Wed, 17 Jul 2024 15:16:06 +0100
Subject: [PATCH] modules/outputs: make `type` readOnly at the top-level

Instead of relying on `lib.mkForce` we can enforce this more strictly by
setting the option "readOnly".
---
 modules/output.nix           | 7 ++++++-
 modules/top-level/output.nix | 1 -
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/modules/output.nix b/modules/output.nix
index 0beb31d4..112ee18e 100644
--- a/modules/output.nix
+++ b/modules/output.nix
@@ -80,7 +80,12 @@ in
         "lua"
       ];
       default = "lua";
-      description = "Whether the generated file is a vim or a lua file";
+      description = ''
+        Whether the generated file is a vim or a lua file
+
+        Read-only outside of `files` submodules.
+      '';
+      readOnly = config.isTopLevel;
     };
 
     path = mkOption {
diff --git a/modules/top-level/output.nix b/modules/top-level/output.nix
index 13998071..eca831aa 100644
--- a/modules/top-level/output.nix
+++ b/modules/top-level/output.nix
@@ -274,7 +274,6 @@ in
       );
     in
     {
-      type = lib.mkForce "lua";
       finalPackage = wrappedNeovim;
       initPath = "${init}";