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/networking/cluster/clusterctl/default.nix

@@ -0,0 +1,41 @@
+{ lib, buildGoModule, fetchFromGitHub, installShellFiles }:
+
+buildGoModule rec {
+  pname = "clusterctl";
+  version = "1.1.4";
+
+  src = fetchFromGitHub {
+    owner = "kubernetes-sigs";
+    repo = "cluster-api";
+    rev = "v${version}";
+    sha256 = "sha256-0hQ+FicY74I5Fpl4FQsYMtQyBgzRnUeXl/vsNQ6GHZw=";
+  };
+
+  vendorSha256 = "sha256-PLUN9d+oo7vHUUpiIBUgU1snPlsHOMt+8q+jQZzZC+8=";
+
+  subPackages = [ "cmd/clusterctl" ];
+
+  nativeBuildInputs = [ installShellFiles ];
+
+  ldflags = let t = "sigs.k8s.io/cluster-api/version"; in [
+    "-X ${t}.gitMajor=${lib.versions.major version}"
+    "-X ${t}.gitMinor=${lib.versions.minor version}"
+    "-X ${t}.gitVersion=v${version}"
+  ];
+
+  postInstall = ''
+    # errors attempting to write config to read-only $HOME
+    export HOME=$TMPDIR
+
+    installShellCompletion --cmd clusterctl \
+      --bash <($out/bin/clusterctl completion bash) \
+      --zsh <($out/bin/clusterctl completion zsh)
+  '';
+
+  meta = with lib; {
+    description = "Kubernetes cluster API tool";
+    homepage = "https://cluster-api.sigs.k8s.io/";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ zowoq ];
+  };
+}