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/gsignond/plugins/mail.nix

@@ -0,0 +1,36 @@
+{ lib, stdenv, fetchFromGitLab, pkg-config, meson, ninja, vala, glib, gsignond, gobject-introspection }:
+
+stdenv.mkDerivation rec {
+  pname = "gsignond-plugin-mail";
+  version = "0.3.0";
+
+  src = fetchFromGitLab {
+    owner = "accounts-sso";
+    repo = "gsignond-plugin-mail";
+    rev = version;
+    sha256 = "0x8jcl0ra9kacm80f1im5wpxp9r9wxayjwnk6dkv7fhjbl2p4nh0";
+  };
+
+  nativeBuildInputs = [
+    gobject-introspection
+    meson
+    ninja
+    pkg-config
+    vala
+  ];
+
+  buildInputs = [
+    glib
+    gsignond
+  ];
+
+  PKG_CONFIG_GSIGNOND_GPLUGINSDIR = "${placeholder "out"}/lib/gsignond/gplugins";
+
+  meta = with lib; {
+    description = "Plugin for the Accounts-SSO gSignOn daemon that handles E-Mail credentials";
+    homepage = "https://gitlab.com/accounts-sso/gsignond-plugin-mail";
+    license = licenses.lgpl21Plus;
+    maintainers = with maintainers; [ ];
+    platforms = platforms.linux;
+  };
+}