pkgs.xorg should use newScope

[cleverca22]

Issue description

it is basically imposible to override things like pkgs.xorg.libX11 because things like xorg.libXrandr refer to it within a rec { set

if it was redone like this:

let
  packages = self: {
    libX11 = self.callPackage .... {};
    libXrandr = self.callPackage ... {};
  };
in pkgs.lib.makeScope pkgs.newScope packages

then you can more easily refer to other packages within that set, and it can also support xorg = pkgs.xorg.overrideScope to insert overrides into it

[stale]

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[LunNova]

Still an issue, ran into while trying to override xorg.fontbhlucidatypewriter100dpi.

[Artturin]

It uses makeScopeWithSplicing' now