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/servers/monitoring/prometheus/unbound-exporter.nix

@@ -0,0 +1,31 @@
+{ lib, stdenv, rustPlatform, fetchFromGitHub, openssl, pkg-config, nixosTests, Security }:
+
+rustPlatform.buildRustPackage rec {
+  pname = "unbound-telemetry";
+  version = "unstable-2021-09-18";
+
+  src = fetchFromGitHub {
+    owner = "svartalf";
+    repo = pname;
+    rev = "19e53b05828a43b7062b67a9cc6c84836ca26439";
+    sha256 = "sha256-wkr9T6GlJP/PSv17z3MC7vC0cXg/Z6rGlhlCUHH3Ua4=";
+  };
+
+  cargoSha256 = "sha256-6V39Wfqin2RK73rehsIwmqDkOin4FEiqJQjTKAEx9Vs=";
+
+  nativeBuildInputs = [ pkg-config ];
+
+  buildInputs = [ openssl ]
+    ++ lib.optional stdenv.isDarwin Security;
+
+  passthru.tests = {
+    inherit (nixosTests.prometheus-exporters) unbound;
+  };
+
+  meta = with lib; {
+    description = "Prometheus exporter for Unbound DNS resolver";
+    homepage = "https://github.com/svartalf/unbound-telemetry";
+    license = licenses.mit;
+    maintainers = with maintainers; [ SuperSandro2000 ];
+  };
+}