soundsource: use fetchzip

Fetch and hash the unpacked bundle rather than the zip bytes, which removes
the unzip build input (NixOS/nixpkgs#498552) and survives archive.org
re-serving the same file with different container metadata - a change on their
end previously broke the fixed-output hash (NixOS/nixpkgs#463091).

Assisted-by: Claude Code (Claude Opus 4.8)

pkgs/by-name/so/soundsource/package.nix

@@ -1,27 +1,24 @@
 {
   lib,
   stdenvNoCC,
-  fetchurl,
-  unzip,
+  fetchzip,
 }:
 stdenvNoCC.mkDerivation (finalAttrs: {
   pname = "soundsource";
   version = "6.1.0";
 
-  src = fetchurl {
+  src = fetchzip {
     url = "https://web.archive.org/web/20260724150017/https://cdn.rogueamoeba.com/soundsource/download/SoundSource.zip";
-    hash = "sha256-ZGyL4Ljeu7/Uz01jDtw42pJdrnJ0wYIVhRFHzfVrvtI=";
+    hash = "sha256-C7VvtREU7NA27N9VRQ+ktU6iTQL5wWGEND+3oG6jyII=";
   };
 
   dontUnpack = true;
 
-  nativeBuildInputs = [ unzip ];
-
   installPhase = ''
     runHook preInstall
 
-    mkdir -p "$out/Applications"
-    unzip -d "$out/Applications" $src
+    mkdir -p "$out/Applications/SoundSource.app"
+    cp -R $src/. "$out/Applications/SoundSource.app/"
 
     runHook postInstall
   '';