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/email/default.nix

@@ -0,0 +1,51 @@
+{ stdenv, lib, fetchFromGitHub, fetchpatch, openssl }:
+
+let
+  eMailSrc = fetchFromGitHub {
+    owner = "deanproxy";
+    repo = "eMail";
+    rev = "7d23c8f508a52bd8809e2af4290417829b6bb5ae";
+    sha256 = "1cxxzhm36civ6vjdgrk7mfmlzkih44kdii6l2xgy4r434s8rzcpn";
+  };
+
+  srcRoot = eMailSrc.name;
+
+  dlibSrc = fetchFromGitHub {
+    owner = "deanproxy";
+    repo = "dlib";
+    rev = "f62f29e918748b7cea476220f7492672be81c9de";
+    sha256 = "0h34cikch98sb7nsqjnb9wl384c8ndln3m6yb1172l4y89qjg9rr";
+  };
+
+in
+
+stdenv.mkDerivation {
+  pname = "email-git";
+  version = "unstable-2016-01-31";
+  src = eMailSrc;
+
+  patches = [
+    # Pul patch pending upstream inclusion for -fno-common toolchain support:
+    #   https://github.com/deanproxy/eMail/pull/61
+    (fetchpatch {
+      name = "fno-common.patch";
+      url = "https://github.com/deanproxy/eMail/commit/c3c1e52132832be0e51daa6e0037d5bb79a17751.patch";
+      sha256 = "17ndrb65g0v4y521333h4244419s8nncm0yx2jwv12sf0dl6gy8i";
+    })
+  ];
+
+  buildInputs = [ openssl ];
+
+  unpackPhase = ''
+    unpackPhase;
+    cp -Rp ${dlibSrc}/* ${srcRoot}/dlib;
+    chmod -R +w ${srcRoot}/dlib;
+  '';
+
+  meta = {
+    description = "Command line SMTP client";
+    license = with lib.licenses; [ gpl2 ];
+    homepage = "https://deanproxy.com/code";
+    platforms = lib.platforms.unix;
+  };
+}