From c14ed78ea34831e8fbc3614b9aa98c3319e6aca3 Mon Sep 17 00:00:00 2001
From: Pratham Patel <prathampatel@thefossguy.com>
Date: Thu, 10 Apr 2025 17:07:43 +0530
Subject: [PATCH] cosmic-osd: substitue path for `audio-volume-change.oga` file

The path `/usr/share/sounds/freedesktop/stereo/audio-volume-change.oga`
is not accessible on NixOS because the directory `/usr` does not exist
on NixOS. But the `audio-volume-change.oga` file is available in the
`sound-theme-freedesktop` package. So substitute the full, FHS-compliant
path with the path of the `sound-theme-freedesktop` package from the Nix
store.
---
 pkgs/by-name/co/cosmic-osd/package.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pkgs/by-name/co/cosmic-osd/package.nix b/pkgs/by-name/co/cosmic-osd/package.nix
index 31be64525d5e..bef80f5a04bb 100644
--- a/pkgs/by-name/co/cosmic-osd/package.nix
+++ b/pkgs/by-name/co/cosmic-osd/package.nix
@@ -1,6 +1,7 @@
 {
   lib,
   fetchFromGitHub,
+  sound-theme-freedesktop,
   rustPlatform,
   libcosmicAppHook,
   pulseaudio,
@@ -20,6 +21,11 @@ rustPlatform.buildRustPackage (finalAttrs: {
     hash = "sha256-ezOeRgqI/GOWFknUVZI7ZLEy1GYaBI+/An83HWKL6ho=";
   };
 
+  postPatch = ''
+    substituteInPlace src/components/app.rs \
+      --replace-fail '/usr/share/sounds/freedesktop/stereo/audio-volume-change.oga' '${sound-theme-freedesktop}/share/sounds/freedesktop/stereo/audio-volume-change.oga'
+  '';
+
   useFetchCargoVendor = true;
   cargoHash = "sha256-vYehF2RjPrTZiuGcRUe4XX3ftRo7f+SIoKizD/kOtR8=";