monero: force use of system libraries

pkgs/applications/blockchains/monero/default.nix

@@ -2,11 +2,18 @@
 , cmake, pkgconfig
 , boost, miniupnpc, openssl, unbound
 , zeromq, pcsclite, readline, libsodium, hidapi
-, protobuf, randomx, rapidjson, libusb-compat-0_1
+, randomx, rapidjson
 , CoreData, IOKit, PCSC
+, trezorSupport ? true
+  , libusb1  ? null
+  , protobuf ? null
+  , python3  ? null
 }:
 
+with stdenv.lib;
+
 assert stdenv.isDarwin -> IOKit != null;
+assert trezorSupport -> all (x: x!=null) [ libusb1 protobuf python3 ];
 
 stdenv.mkDerivation rec {
   pname = "monero";
@@ -20,21 +27,30 @@ stdenv.mkDerivation rec {
     fetchSubmodules = true;
   };
 
+  patches = [ ./use-system-libraries.patch ];
+
+  postPatch = ''
+    # remove vendored libraries
+    rm -r external/{miniupnp,randomx,rapidjson,unbound}
+  '';
+
   nativeBuildInputs = [ cmake pkgconfig ];
 
   buildInputs = [
     boost miniupnpc openssl unbound
     zeromq pcsclite readline
     libsodium hidapi randomx rapidjson
-    protobuf libusb-compat-0_1
-  ] ++ stdenv.lib.optionals stdenv.isDarwin [ IOKit CoreData PCSC ];
+    protobuf
+  ] ++ optionals stdenv.isDarwin [ IOKit CoreData PCSC ]
+    ++ optionals trezorSupport [ libusb1 protobuf python3 ];
 
   cmakeFlags = [
     "-DCMAKE_BUILD_TYPE=Release"
     "-DUSE_DEVICE_TREZOR=ON"
     "-DBUILD_GUI_DEPS=ON"
     "-DReadline_ROOT_DIR=${readline.dev}"
-  ] ++ stdenv.lib.optional stdenv.isDarwin "-DBoost_USE_MULTITHREADED=OFF";
+    "-DRandomX_ROOT_DIR=${randomx}"
+  ] ++ optional stdenv.isDarwin "-DBoost_USE_MULTITHREADED=OFF";
 
   meta = with stdenv.lib; {
     description = "Private, secure, untraceable currency";