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/servers/dns/bind/default.nix

@@ -77,13 +77,13 @@ stdenv.mkDerivation rec {
 
   doCheck = false; # requires root and the net
 
-  meta = {
+  meta = with stdenv.lib; {
     homepage = https://www.isc.org/downloads/bind/;
     description = "Domain name server";
-    license = stdenv.lib.licenses.mpl20;
+    license = licenses.mpl20;
 
-    maintainers = with stdenv.lib.maintainers; [peti];
-    platforms = with stdenv.lib.platforms; unix;
+    maintainers = with maintainers; [ peti globin ];
+    platforms = platforms.unix;
 
     outputsToInstall = [ "out" "dnsutils" "host" ];
   };