From 4b2dbd4511310d4e15c7af0bf87017880e640d9a Mon Sep 17 00:00:00 2001
From: Alyssa Ross <hi@alyssa.is>
Date: Thu, 10 Oct 2024 12:24:05 +0200
Subject: [PATCH] colord: add enableSystemd option

Since 7f2a6f17fccf ("xdg-desktop-portal-gtk: Enable all default
portals unconditionally"), building colord is necessary to build
xdg-desktop-portal-gtk, but it wasn't possible for systems that can't
use systemd.

I've called the option "enableSystemd" for consistency with the
existing "enableDaemon" option.

As usual in Nixpkgs, the user is responsible for also overriding udev
to a non-systemd implementation if necessary.
---
 pkgs/tools/misc/colord/default.nix | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/pkgs/tools/misc/colord/default.nix b/pkgs/tools/misc/colord/default.nix
index 986babbf2867..da893702d9d5 100644
--- a/pkgs/tools/misc/colord/default.nix
+++ b/pkgs/tools/misc/colord/default.nix
@@ -10,7 +10,9 @@
 , gusb
 , lcms2
 , sqlite
+, udev
 , systemd
+, enableSystemd ? lib.meta.availableOn stdenv.hostPlatform systemd
 , dbus
 , gobject-introspection
 , argyllcms
@@ -60,6 +62,11 @@ stdenv.mkDerivation rec {
     "-Dvapi=true"
     "-Ddaemon=${lib.boolToString enableDaemon}"
     "-Ddaemon_user=colord"
+    (lib.mesonBool "systemd" enableSystemd)
+
+    # The presence of the "udev" pkg-config module (as opposed to "libudev")
+    # indicates whether rules are supported.
+    (lib.mesonBool "udev_rules" (lib.elem "udev" udev.meta.pkgConfigModules))
   ];
 
   nativeBuildInputs = [
@@ -90,6 +97,8 @@ stdenv.mkDerivation rec {
     libgudev
     sane-backends
     sqlite
+    udev
+  ] ++ lib.optionals enableSystemd [
     systemd
   ] ++ lib.optionals enableDaemon [
     polkit