diff --git a/nixos/modules/services/x11/xserver.nix b/nixos/modules/services/x11/xserver.nix
index 6e470e65e35..02ba680255b 100644
--- a/nixos/modules/services/x11/xserver.nix
+++ b/nixos/modules/services/x11/xserver.nix
@@ -229,6 +229,14 @@ in
         '';
       };
 
+      s3tcSupport = mkOption {
+        default = false;
+        description = ''
+          Make S2TC via libtxc_dxtn available to OpenGL drivers. Using
+          this library may require a patent license depending on your location.
+        '';
+      };
+
       startOpenSSHAgent = mkOption {
         default = true;
         description = ''
@@ -410,7 +418,9 @@ in
       optionals (elem "nvidia" driverNames) [ "nouveau" "nvidiafb" ];
 
     environment.variables.LD_LIBRARY_PATH =
-      [ "/run/opengl-driver/lib" "/run/opengl-driver-32/lib" ];
+      [ "/run/opengl-driver/lib" "/run/opengl-driver-32/lib" ]
+      ++ pkgs.lib.optional cfg.s3tcSupport "${pkgs.libtxc_dxtn}/lib"
+      ++ pkgs.lib.optional (cfg.s3tcSupport && cfg.driSupport32Bit) "${pkgs_i686.libtxc_dxtn}/lib";
 
     environment.etc =
       (optionals cfg.exportConfiguration