From bfc037e615298a83bd6ae9287cd137ee703fa4ad Mon Sep 17 00:00:00 2001
From: Val Packett <val@invisiblethingslab.com>
Date: Fri, 5 Dec 2025 04:08:27 -0300
Subject: [PATCH] systemd: hoist XDG_RUNTIME_DIR up to manager defaults

In some cases it might be needed in arbitrary services.. such as mpd
needing PipeWire to play sound into
---
 nixosModules/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/nixosModules/default.nix b/nixosModules/default.nix
index 7ae6754..101d4ce 100644
--- a/nixosModules/default.nix
+++ b/nixosModules/default.nix
@@ -159,6 +159,8 @@ in {
 
   # Configure services
 
+  systemd.settings.Manager.DefaultEnvironment = "XDG_RUNTIME_DIR=${runtimeDir}";
+
   systemd.services.muvm-remote = {
     enable = true;
     description = "microVM Application runner";
@@ -171,7 +173,6 @@ in {
       Type = "exec";
       PassEnvironment = ["TERM" "MESA_LOADER_DRIVER_OVERRIDE" "MUVM_REMOTE_CONFIG"]; # "KRUN_CONFIG"];
       Environment = [
-        "XDG_RUNTIME_DIR=${runtimeDir}"
         "WAYLAND_DISPLAY=wayland-1"
         "DBUS_SESSION_BUS_ADDRESS=unix:path=${runtimeDir}/sidebus.sock"
         "PATH=/run/current-system/sw/bin"
@@ -229,7 +230,6 @@ in {
     serviceConfig = {
       ExecStartPre = "+/run/current-system/sw/bin/chmod 0666 /dev/dri/card0 /dev/dri/renderD128";
       ExecStart = "${virtwl.packages.${system}.proxy}/bin/wayland-proxy-virtwl --virtio-gpu";
-      Environment = ["XDG_RUNTIME_DIR=${runtimeDir}"];
       User = "appvm";
       Group = "appvm";
     };