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/applications/misc/ddgr/default.nix

@@ -0,0 +1,33 @@
+{ lib, stdenv, fetchFromGitHub, python3, installShellFiles }:
+
+stdenv.mkDerivation rec {
+  version = "2.0";
+  pname = "ddgr";
+
+  src = fetchFromGitHub {
+    owner = "jarun";
+    repo = "ddgr";
+    rev = "v${version}";
+    sha256 = "sha256-otfa2t/tfpYKqQu+VQxRKryUsIxM3JKILc3zseTC2KM=";
+  };
+
+  nativeBuildInputs = [ installShellFiles ];
+
+  buildInputs = [ python3 ];
+
+  makeFlags = [ "PREFIX=$(out)" ];
+
+  postInstall = ''
+    installShellCompletion --bash --name ddgr.bash auto-completion/bash/ddgr-completion.bash
+    installShellCompletion --fish auto-completion/fish/ddgr.fish
+    installShellCompletion --zsh auto-completion/zsh/_ddgr
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/jarun/ddgr";
+    description = "Search DuckDuckGo from the terminal";
+    license = licenses.gpl3;
+    maintainers = with maintainers; [ ceedubs markus1189 ];
+    platforms = python3.meta.platforms;
+  };
+}