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/netcat-openbsd/default.nix

@@ -0,0 +1,54 @@
+{ lib, stdenv, fetchFromGitLab, pkg-config, libbsd, installShellFiles }:
+
+stdenv.mkDerivation rec {
+  pname = "netcat-openbsd";
+  version = "1.218-5";
+
+  src = fetchFromGitLab {
+    domain = "salsa.debian.org";
+    owner = "debian";
+    repo = "netcat-openbsd";
+    rev = "refs/tags/debian/${version}";
+    sha256 = "sha256-jEJ8x49Z1UN2qOChGp173aQuPkgl2fWwUUJgUdOv60I=";
+  };
+
+  strictDeps = true;
+  nativeBuildInputs = [ pkg-config installShellFiles ];
+  buildInputs = [ libbsd ];
+
+  NIX_CFLAGS_COMPILE = [
+    "-I${lib.getDev libbsd}/include/libbsd"
+  ];
+
+  NIX_LDFLAGS = [ "-lbsd" ];
+
+  postPatch = ''
+    for file in $(cat debian/patches/series); do
+      patch -p1 < debian/patches/$file
+    done
+  '';
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/bin
+    mv nc $out/bin/nc
+    installManPage nc.1
+
+    runHook postInstall
+  '';
+
+  doInstallCheck = true;
+  installCheckPhase = ''
+    $out/bin/nc -h 2> /dev/null
+  '';
+
+  meta = with lib; {
+    description = "TCP/IP swiss army knife. OpenBSD variant";
+    homepage = "https://salsa.debian.org/debian/netcat-openbsd";
+    maintainers = with maintainers; [ artturin ];
+    license = licenses.bsd3;
+    platforms = platforms.unix;
+    mainProgram = "nc";
+  };
+}