From cfffe9b704ce58f28dd566b6d877dda3dada8bd8 Mon Sep 17 00:00:00 2001
From: mcgi5sr2 <mcgi5sr2@gmail.com>
Date: Sun, 5 Apr 2026 11:11:31 +0100
Subject: [PATCH] nix: add ffmpeg dependency for video background support

ffmpeg is included conditionally via withVideoBackend (default true),
allowing packagers to opt out by passing withVideoBackend = false,
which also passes -DVIDEO_BACKEND=OFF to cmake.
---
 nix/default.nix | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/nix/default.nix b/nix/default.nix
index 8a80871..774da9d 100644
--- a/nix/default.nix
+++ b/nix/default.nix
@@ -4,7 +4,7 @@
   cmake,
   pkg-config,
   cairo,
-  ffmpeg,
+  ffmpeg ? null,
   libdrm,
   libGL,
   libxkbcommon,
@@ -20,6 +20,7 @@
   wayland,
   wayland-protocols,
   wayland-scanner,
+  withVideoBackend ? true,
   version ? "git",
   shortRev ? "",
 }:
@@ -38,7 +39,6 @@ stdenv.mkDerivation {
 
   buildInputs = [
     cairo
-    ffmpeg
     libdrm
     libGL
     libxkbcommon
@@ -52,12 +52,12 @@ stdenv.mkDerivation {
     systemdLibs
     wayland
     wayland-protocols
-  ];
+  ] ++ lib.optionals withVideoBackend [ ffmpeg ];
 
   cmakeFlags = lib.mapAttrsToList lib.cmakeFeature {
     HYPRLOCK_COMMIT = shortRev;
     HYPRLOCK_VERSION_COMMIT = ""; # Intentionally left empty (hyprlock --version will always print the commit)
-  };
+  } ++ lib.optional (!withVideoBackend) (lib.cmakeBool "VIDEO_BACKEND" false);
 
   meta = {
     homepage = "https://github.com/hyprwm/hyprlock";