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/security/qdigidoc/default.nix

@@ -0,0 +1,51 @@
+{ lib, mkDerivation, fetchurl, cmake, gettext
+, pkg-config, libdigidocpp, opensc, openldap, openssl, pcsclite, qtbase
+, qttranslations, qtsvg }:
+
+mkDerivation rec {
+  pname = "qdigidoc";
+  version = "4.2.11";
+
+  src = fetchurl {
+    url =
+      "https://github.com/open-eid/DigiDoc4-Client/releases/download/v${version}/qdigidoc4_${version}.110-1804.tar.xz";
+    sha256 = "sha256-Sg6lFZeIJn3T/suDc5Z/kNqBf/sIV9c6EJJ0Nr0dwTM=";
+  };
+
+  tsl = fetchurl {
+    url = "https://ec.europa.eu/tools/lotl/eu-lotl-pivot-300.xml";
+    sha256 = "1cikz36w9phgczcqnwk4k3mx3kk919wy2327jksmfa4cjfjq4a8d";
+  };
+
+  nativeBuildInputs = [ cmake gettext pkg-config ];
+
+  postPatch = ''
+    substituteInPlace client/CMakeLists.txt \
+      --replace $\{TSL_URL} file://${tsl}
+  '';
+
+  buildInputs = [
+    libdigidocpp
+    opensc
+    openldap
+    openssl
+    pcsclite
+    qtbase
+    qtsvg
+    qttranslations
+  ];
+
+  # replace this hack with a proper cmake variable or environment variable
+  # once https://github.com/open-eid/cmake/pull/34 (or #35) gets merged.
+  qtWrapperArgs = [
+      "--prefix LD_LIBRARY_PATH : ${opensc}/lib/pkcs11/"
+  ];
+
+  meta = with lib; {
+    description = "Qt-based UI for signing and verifying DigiDoc documents";
+    homepage = "https://www.id.ee/";
+    license = licenses.lgpl21Plus;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ mmahut yana ];
+  };
+}