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/maildrop/default.nix

@@ -0,0 +1,25 @@
+{ fetchurl, lib, stdenv, pkg-config, pcre, perl }:
+
+stdenv.mkDerivation rec {
+  pname = "maildrop";
+  version = "2.6.0";
+
+  src = fetchurl {
+    url = "mirror://sourceforge/courier/maildrop/${version}/maildrop-${version}.tar.bz2";
+    sha256 = "1a94p2b41iy334cwfwmzi19557dn5j61abh0cp2rfc9dkc8ibhdg";
+  };
+
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [ pcre perl ];
+
+  patches = [ ./maildrop.configure.hack.patch ]; # for building in chroot
+
+  doCheck = false; # fails with "setlocale: LC_ALL: cannot change locale (en_US.UTF-8)"
+
+  meta = with lib; {
+    homepage = "http://www.courier-mta.org/maildrop/";
+    description = "Mail filter/mail delivery agent that is used by the Courier Mail Server";
+    license = licenses.gpl3;
+    platforms = platforms.linux;
+  };
+}

pkgs/tools/networking/maildrop/maildrop.configure.hack.patch

@@ -0,0 +1,13 @@
+--- a/maildrop/configure	2012-09-06 01:52:13.000000000 +0100
++++ b/maildrop/configure	2013-01-04 03:00:57.095628327 +0000
+@@ -17562,8 +17562,8 @@
+ check_spooldir() {
+   if test "$CHECKED_SPOOLDIR" != 1
+   then
+-     get_spooldir
+-     MBOX_DIR="$SPOOLDIR"
++     MBOX_DIR="/var/spool/mail"
++     MBOX_RESET_GID=0
+      CHECKED_SPOOLDIR=1
+   fi
+ }