ckb: fix missing modprobe dependency

pkgs/tools/misc/ckb/ckb-modprobe.patch

@@ -0,0 +1,13 @@
+diff --git a/src/ckb-daemon/usb_linux.c b/src/ckb-daemon/usb_linux.c
+index 8673f86..4714305 100644
+--- a/src/ckb-daemon/usb_linux.c
++++ b/src/ckb-daemon/usb_linux.c
+@@ -440,7 +440,7 @@ static void udev_enum(){
+ 
+ int usbmain(){
+     // Load the uinput module (if it's not loaded already)
+-    if(system("modprobe uinput") != 0)
++    if(system("@kmod@/bin/modprobe uinput") != 0)
+         ckb_warn("Failed to load uinput module\n");
+ 
+     // Create the udev object

pkgs/tools/misc/ckb/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, libudev, pkgconfig, qtbase, qmake, zlib }:
+{ stdenv, fetchFromGitHub, substituteAll, libudev, pkgconfig, qtbase, qmake, zlib, kmod }:
 
 stdenv.mkDerivation rec {
   version = "0.2.8";
@@ -24,6 +24,11 @@ stdenv.mkDerivation rec {
 
   patches = [
     ./ckb-animations-location.patch
+    (substituteAll {
+      name = "ckb-modprobe.patch";
+      src = ./ckb-modprobe.patch;
+      inherit kmod;
+    })
   ];
 
   doCheck = false;