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/gen-oath-safe/default.nix

@@ -0,0 +1,43 @@
+{ coreutils, fetchFromGitHub, file, libcaca, makeWrapper, python3, openssl, qrencode, lib, stdenv, yubikey-manager }:
+
+stdenv.mkDerivation rec {
+  pname = "gen-oath-safe";
+  version = "0.11.0";
+  src = fetchFromGitHub {
+    owner = "mcepl";
+    repo = "gen-oath-safe";
+    rev = version;
+    sha256 = "1914z0jgj7lni0nf3hslkjgkv87mhxdr92cmhmbzhpjgjgr23ydp";
+  };
+
+  nativeBuildInputs = [ makeWrapper ];
+
+  dontBuild = true;
+
+  installPhase =
+    let
+      path = lib.makeBinPath [
+        coreutils
+        file
+        libcaca.bin
+        openssl.bin
+        python3
+        qrencode
+        yubikey-manager
+      ];
+    in
+    ''
+      mkdir -p $out/bin
+      cp gen-oath-safe $out/bin/
+      wrapProgram $out/bin/gen-oath-safe \
+        --prefix PATH : ${path}
+    '';
+  meta = with lib; {
+    homepage = "https://github.com/mcepl/gen-oath-safe";
+    description = "Script for generating HOTP/TOTP keys (and QR code)";
+    platforms =  platforms.unix;
+    license = licenses.mit;
+    maintainers = [ maintainers.makefu ];
+  };
+
+}