uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/tools/networking/nylon/default.nix

@@ -0,0 +1,30 @@
+{ lib, stdenv, fetchurl, libevent, buildEnv }:
+let
+  # failed to find a better way to make it work
+  libevent-comb = buildEnv {
+    inherit (libevent.out) name;
+    paths = [ libevent.dev libevent.out ];
+  };
+in
+stdenv.mkDerivation rec {
+  pname = "nylon";
+  version = "1.21";
+  src = fetchurl {
+    url = "https://monkey.org/~marius/nylon/nylon-${version}.tar.gz";
+    sha256 = "34c132b005c025c1a5079aae9210855c80f50dc51dde719298e1113ad73408a4";
+  };
+
+  patches = [ ./configure-use-solib.patch ];
+
+  configureFlags = [ "--with-libevent=${libevent-comb}" ];
+
+  buildInputs = [ libevent ];
+
+  meta = with lib; {
+    homepage = "http://monkey.org/~marius/nylon";
+    description = "Proxy server, supporting SOCKS 4 and 5, as well as a mirror mode";
+    license = licenses.bsdOriginal;
+    maintainers = with maintainers; [ edwtjo ];
+    platforms = platforms.linux;
+  };
+}