samplebrain: actually install desktop file

pkgs/by-name/sa/samplebrain/package.nix

@@ -7,6 +7,7 @@
   liblo,
   libsndfile,
   makeDesktopItem,
+  copyDesktopItems,
   portaudio,
   libsForQt5,
 }:
@@ -33,6 +34,7 @@ stdenv.mkDerivation (finalAttrs: {
   nativeBuildInputs = with libsForQt5; [
     qmake
     wrapQtAppsHook
+    copyDesktopItems
   ];
 
   buildInputs = [
@@ -43,15 +45,17 @@ stdenv.mkDerivation (finalAttrs: {
     libsForQt5.qtbase
   ];
 
-  desktopItem = makeDesktopItem {
-    type = "Application";
-    desktopName = "samplebrain";
-    name = "samplebrain";
-    comment = "A sample masher designed by Aphex Twin";
-    exec = "samplebrain";
-    icon = "samplebrain";
-    categories = [ "Audio" ];
-  };
+  desktopItems = [
+    (makeDesktopItem {
+      type = "Application";
+      desktopName = "samplebrain";
+      name = "samplebrain";
+      comment = "A sample masher designed by Aphex Twin";
+      exec = "samplebrain";
+      icon = "samplebrain";
+      categories = [ "Audio" ];
+    })
+  ];
 
   installPhase = ''
     mkdir -p $out/bin