zoom-us: format, cleanup

pkgs/applications/networking/instant-messengers/zoom-us/default.nix

@@ -2,7 +2,7 @@
 , lib
 , fetchurl
 , makeWrapper
-# Dynamic libraries
+  # Dynamic libraries
 , alsa-lib
 , atk
 , cairo
@@ -18,16 +18,15 @@
 , xorg
 , libxkbcommon
 , zlib
-# Runtime
+  # Runtime
 , coreutils
 , pciutils
 , procps
 , util-linux
-, pulseaudioSupport ? true, libpulseaudio ? null
+, pulseaudioSupport ? true
+, libpulseaudio
 }:
 
-assert pulseaudioSupport -> libpulseaudio != null;
-
 let
   version = "5.7.28991.0726";
   srcs = {
@@ -65,9 +64,11 @@ let
     xorg.libXtst
   ] ++ lib.optional (pulseaudioSupport) libpulseaudio);
 
-in stdenv.mkDerivation rec {
+in
+stdenv.mkDerivation rec {
   pname = "zoom";
   inherit version;
+
   src = srcs.${stdenv.hostPlatform.system};
 
   dontUnpack = true;
@@ -118,11 +119,11 @@ in stdenv.mkDerivation rec {
 
   passthru.updateScript = ./update.sh;
 
-  meta = {
+  meta = with lib; {
     homepage = "https://zoom.us/";
     description = "zoom.us video conferencing application";
-    license = lib.licenses.unfree;
+    license = licenses.unfree;
     platforms = builtins.attrNames srcs;
-    maintainers = with lib.maintainers; [ danbst tadfisher doronbehar ];
+    maintainers = with maintainers; [ danbst tadfisher doronbehar ];
   };
 }