Merge branch 'master' into staging-next

There ver very many conflicts, basically all due to
name -> pname+version.  Fortunately, almost everything was auto-resolved
by kdiff3, and for now I just fixed up a couple evaluation problems,
as verified by the tarball job.  There might be some fallback to these
conflicts, but I believe it should be minimal.

Hydra nixpkgs: ?compare=1538299

pkgs/applications/video/vlc/default.nix

@@ -25,11 +25,11 @@ assert (withQt5 -> qtbase != null && qtsvg != null && qtx11extras != null && wra
 
 stdenv.mkDerivation rec {
   pname = "vlc";
-  version = "3.0.7.1";
+  version = "3.0.8";
 
   src = fetchurl {
     url = "http://get.videolan.org/vlc/${version}/${pname}-${version}.tar.xz";
-    sha256 = "1xb4c8n0hkwijzfdlbwadhxnx9z8rlhmrdq4c7q74rq9f51q0m86";
+    sha256 = "e0149ef4a20a19b9ecd87309c2d27787ee3f47dfd47c6639644bc1f6fd95bdf6";
   };
 
   # VLC uses a *ton* of libraries for various pieces of functionality, many of