From d964cb6440e0c877f565b3aa2c467e48fd1ce3a1 Mon Sep 17 00:00:00 2001
From: Randy Eckenrode <randy@largeandhighquality.com>
Date: Mon, 26 Jan 2026 15:35:56 -0500
Subject: [PATCH] dbus: make epoll, inotify, and systemd support conditional

These will be enabled by default due `-Dauto_features=enabled` being set
in Nixpkgs. However, not all of those features are available on every
platform supported by D-Bus, so set them conditionally.
---
 pkgs/by-name/db/dbus/package.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkgs/by-name/db/dbus/package.nix b/pkgs/by-name/db/dbus/package.nix
index dea34453ba09..e96dfd135076 100644
--- a/pkgs/by-name/db/dbus/package.nix
+++ b/pkgs/by-name/db/dbus/package.nix
@@ -106,9 +106,12 @@ stdenv.mkDerivation (finalAttrs: {
     "-Dsystemd_user_unitdir=${placeholder "out"}/etc/systemd/user"
     (lib.mesonEnable "x11_autolaunch" x11Support)
     (lib.mesonEnable "apparmor" stdenv.hostPlatform.isLinux)
+    (lib.mesonEnable "epoll" stdenv.hostPlatform.isLinux)
+    (lib.mesonEnable "inotify" stdenv.hostPlatform.isLinux)
     (lib.mesonEnable "libaudit" stdenv.hostPlatform.isLinux)
     (lib.mesonEnable "kqueue" (stdenv.hostPlatform.isDarwin || stdenv.hostPlatform.isBSD))
     (lib.mesonEnable "launchd" stdenv.hostPlatform.isDarwin)
+    (lib.mesonEnable "systemd" enableSystemd)
     "-Dselinux=disabled"
   ]
   ++ lib.optionals enableSystemd [