xorg.xorgserver: 1.20.7 -> 1.20.8

https://lists.x.org/archives/xorg-announce/2020-March/003041.html

This release contains a fix for XWayland which removes a buffer swap
race between XWayland and the compositor. This resulted in flickering in
previous versions.

pkgs/servers/x11/xorg/default.nix

···
   }) {};
 
   xorgserver = callPackage ({ stdenv, pkgconfig, fetchurl, xorgproto, openssl, libX11, libXau, libXaw, libxcb, xcbutil, xcbutilwm, xcbutilimage, xcbutilkeysyms, xcbutilrenderutil, libXdmcp, libXfixes, libxkbfile, libXmu, libXpm, libXrender, libXres, libXt }: stdenv.mkDerivation {
-    name = "xorg-server-1.20.7";
+    name = "xorg-server-1.20.8";
     builder = ./builder.sh;
     src = fetchurl {
-      url = mirror://xorg/individual/xserver/xorg-server-1.20.7.tar.bz2;
-      sha256 = "18bfl04ihw1jr3h0fs522nnxxq5ixjay77y9dcymnkzk23q8cndx";
+      url = "mirror://xorg/individual/xserver/xorg-server-1.20.8.tar.bz2";
+      sha256 = "0ih15m7gh1z1ly6z7g82bkni719yisqmbk61a1wgp82bxrmn8yyi";
     };
     hardeningDisable = [ "bindnow" "relro" ];
     nativeBuildInputs = [ pkgconfig ];

pkgs/servers/x11/xorg/tarballs.list

···
 mirror://xorg/individual/util/makedepend-1.0.6.tar.bz2
 mirror://xorg/individual/util/util-macros-1.19.2.tar.bz2
 mirror://xorg/individual/util/xorg-cf-files-1.0.6.tar.bz2
-mirror://xorg/individual/xserver/xorg-server-1.20.7.tar.bz2
+mirror://xorg/individual/xserver/xorg-server-1.20.8.tar.bz2