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/misc/tldr/default.nix

@@ -0,0 +1,36 @@
+{ lib, stdenv, fetchFromGitHub, curl, libzip, pkg-config, installShellFiles }:
+
+stdenv.mkDerivation rec {
+  pname = "tldr";
+  version = "1.4.3";
+
+  src = fetchFromGitHub {
+    owner = "tldr-pages";
+    repo = "tldr-cpp-client";
+    rev = "v${version}";
+    sha256 = "sha256-ZNUW2PebRUDLcZ2/dXClXqf8NUjgw6N73h32PJ8iwmM=";
+  };
+
+  buildInputs = [ curl libzip ];
+  nativeBuildInputs = [ pkg-config installShellFiles ];
+
+  makeFlags = ["CC=${stdenv.cc.targetPrefix}cc" "LD=${stdenv.cc.targetPrefix}cc" "CFLAGS="];
+
+  installFlags = [ "PREFIX=$(out)" ];
+
+  postInstall = ''
+    installShellCompletion --cmd tldr autocomplete/complete.{bash,fish,zsh}
+  '';
+
+  meta = with lib; {
+    description = "Simplified and community-driven man pages";
+    longDescription = ''
+      tldr pages gives common use cases for commands, so you don't need to hunt
+      through a man page for the correct flags.
+    '';
+    homepage = "http://tldr-pages.github.io";
+    license = licenses.mit;
+    maintainers = with maintainers; [ taeer carlosdagos ];
+    platforms = platforms.all;
+  };
+}