vlc: __structuredAttrs, split outputs, and a bit more (#536460)

pkgs/by-name/vl/vlc/package.nix

@@ -219,15 +219,21 @@ stdenv.mkDerivation (finalAttrs: {
     ]
   )
   ++ optionals (waylandSupport && withQt5) [ libsForQt5.qtwayland ];
+
   strictDeps = true;
+  __structuredAttrs = true;
+
+  outputs = [
+    "out"
+    "dev"
+    "doc"
+    "man"
+  ];
 
   env = {
     # vlc searches for c11-gcc, c11, c99-gcc, c99, which don't exist and would be wrong for cross compilation anyway.
-    BUILDCC = "${pkgsBuildBuild.stdenv.cc}/bin/gcc";
+    BUILDCC = lib.getExe pkgsBuildBuild.stdenv.cc;
     LIVE555_PREFIX = live555;
-  }
-  // lib.optionalAttrs stdenv.cc.isGNU {
-    NIX_CFLAGS_COMPILE = "-Wno-error=incompatible-pointer-types";
   };
 
   patches = [