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/development/libraries/volume-key/default.nix

@@ -0,0 +1,46 @@
+{ lib, stdenv, fetchgit, autoreconfHook, pkg-config, gettext, python3
+, ncurses, swig, glib, util-linux, cryptsetup, nss, gpgme
+, autoconf, automake, libtool
+, buildPackages
+}:
+
+stdenv.mkDerivation rec {
+  pname = "volume_key";
+  version = "0.3.11";
+
+  src = fetchgit {
+    url = "https://pagure.io/volume_key.git";
+    rev = "volume_key-${version}";
+    sha256 = "1sqdbcih1c39bjiv4mm1m7acc3lfh2i2hf2r9i7rk8adfzq8awma";
+  };
+
+  outputs = [ "out" "man" "dev" "py" ];
+
+  nativeBuildInputs = [ autoconf automake libtool pkg-config gettext swig ];
+
+  buildInputs = [ autoreconfHook glib cryptsetup nss util-linux gpgme ncurses ];
+
+  configureFlags = [
+    "--with-gpgme-prefix=${gpgme.dev}"
+  ];
+
+  preConfigure = ''
+    export PYTHON="${buildPackages.python3}/bin/python"
+    export PYTHON3_CONFIG="${python3}/bin/python3-config"
+  '';
+
+  makeFlags = [
+    "pyexecdir=$(py)/${python3.sitePackages}"
+    "pythondir=$(py)/${python3.sitePackages}"
+  ];
+
+  doCheck = false; # fails 1 out of 1 tests, needs `certutil`
+
+  meta = with lib; {
+    description = "A library for manipulating storage volume encryption keys and storing them separately from volumes to handle forgotten passphrases, and the associated command-line tool";
+    homepage = "https://pagure.io/volume_key/";
+    license = licenses.gpl2;
+    maintainers = with maintainers; [];
+    platforms = platforms.linux;
+  };
+}