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/mackerel-agent/default.nix

@@ -0,0 +1,40 @@
+{ stdenv, lib, buildGoModule, fetchFromGitHub, makeWrapper, iproute2, nettools }:
+
+buildGoModule rec {
+  pname = "mackerel-agent";
+  version = "0.72.9";
+
+  src = fetchFromGitHub {
+    owner = "mackerelio";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-+3a0FyVf5AB85gGGBI8/ssLBqj9Kp3w9DUNbSaAtXvA=";
+  };
+
+  nativeBuildInputs = [ makeWrapper ];
+  checkInputs = lib.optionals (!stdenv.isDarwin) [ nettools ];
+  buildInputs = lib.optionals (!stdenv.isDarwin) [ iproute2 ];
+
+  vendorSha256 = "sha256-4hdy+Yr9EoUjJ4+pJ2ZEPGlnq+4sx5JLm92eFFav6tU=";
+
+  subPackages = [ "." ];
+
+  ldflags = [
+    "-X=main.version=${version}"
+    "-X=main.gitcommit=v${version}"
+  ];
+
+  postInstall = ''
+    wrapProgram $out/bin/mackerel-agent \
+      --prefix PATH : "${lib.makeBinPath buildInputs}"
+  '';
+
+  doCheck = true;
+
+  meta = with lib; {
+    description = "System monitoring service for mackerel.io";
+    homepage = "https://github.com/mackerelio/mackerel-agent";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ midchildan ];
+  };
+}