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/ftp/vsftpd/default.nix

@@ -0,0 +1,47 @@
+{ lib, stdenv, fetchurl, libcap, libseccomp, openssl, pam, nixosTests }:
+
+stdenv.mkDerivation rec {
+  pname = "vsftpd";
+  version = "3.0.5";
+
+  src = fetchurl {
+    url = "https://security.appspot.com/downloads/vsftpd-${version}.tar.gz";
+    sha256 = "sha256-JrYCrkVLC6bZnvRKCba54N+n9nIoEGc23x8njHC8kdM=";
+  };
+
+  buildInputs = [ libcap openssl libseccomp pam ];
+
+  patches = [ ./CVE-2015-1419.patch ];
+
+  postPatch = ''
+    sed -i "/VSF_BUILD_SSL/s/^#undef/#define/" builddefs.h
+
+    substituteInPlace Makefile \
+      --replace -dirafter "" \
+      --replace /usr $out \
+      --replace /etc $out/etc \
+      --replace "-Werror" ""
+
+
+    mkdir -p $out/sbin $out/man/man{5,8}
+  '';
+
+  makeFlags = [
+    "CC=${stdenv.cc.targetPrefix}cc"
+  ];
+
+  NIX_LDFLAGS = "-lcrypt -lssl -lcrypto -lpam -lcap -lseccomp";
+
+  enableParallelBuilding = true;
+
+  passthru = {
+    tests = { inherit (nixosTests) vsftpd; };
+  };
+
+  meta = with lib; {
+    description = "A very secure FTP daemon";
+    license = licenses.gpl2;
+    maintainers = with maintainers; [ peterhoeg ];
+    platforms = platforms.linux;
+  };
+}