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/mail/postfix/default.nix

@@ -96,12 +96,12 @@ in stdenv.mkDerivation rec {
       --prefix PATH ":" ${lib.makeBinPath [ coreutils findutils gnugrep gawk gnused ]}
   '';
 
-  meta = {
+  meta = with lib; {
     homepage = http://www.postfix.org/;
     description = "A fast, easy to administer, and secure mail server";
-    license = with lib.licenses; [ ipl10 epl20 ];
-    platforms = lib.platforms.linux;
-    maintainers = [ lib.maintainers.rickynils ];
+    license = with licenses; [ ipl10 epl20 ];
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ rickynils globin ];
   };
 
 }