From e5fae1d6edf08f103c19dc2a435d2a54879545c0 Mon Sep 17 00:00:00 2001
From: Charles Hall <charles@computer.surgery>
Date: Tue, 6 Jun 2023 08:10:27 -0700
Subject: [PATCH] nixos/lemmy: warn for option removed upstream

Also hide it since it shouldn't be used.

(cherry picked from commit ae76739c7c7783bb100e7ef11342477945a71008)
---
 nixos/modules/services/web-apps/lemmy.nix | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/nixos/modules/services/web-apps/lemmy.nix b/nixos/modules/services/web-apps/lemmy.nix
index f48afd98a6c9..755f09c48964 100644
--- a/nixos/modules/services/web-apps/lemmy.nix
+++ b/nixos/modules/services/web-apps/lemmy.nix
@@ -48,7 +48,7 @@ in
         };
 
         options.federation = {
-          enabled = mkEnableOption (lib.mdDoc "activitypub federation");
+          enabled = (mkEnableOption (lib.mdDoc "activitypub federation")) // { visible = false; };
         };
 
         options.captcha = {
@@ -70,6 +70,10 @@ in
 
   config =
     lib.mkIf cfg.enable {
+      warnings = lib.optional (cfg.settings.federation.enabled) ''
+        This option was removed in 0.17.0 and no longer has any effect.
+      '';
+
       services.lemmy.settings = (mapAttrs (name: mkDefault)
         {
           bind = "127.0.0.1";