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/graphics/feh/default.nix

@@ -43,7 +43,7 @@ stdenv.mkDerivation rec {
     description = "A light-weight image viewer";
     homepage = "https://feh.finalrewind.org/";
     license = licenses.mit;
-    maintainers = [ maintainers.viric maintainers.willibutz ];
+    maintainers = with maintainers; [ viric willibutz globin ];
     platforms = platforms.unix;
   };
 }