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/cmctl/default.nix

@@ -0,0 +1,38 @@
+{ lib, buildGoModule, fetchFromGitHub, installShellFiles }:
+
+buildGoModule rec {
+  pname = "cmctl";
+  version = "1.8.0";
+
+  src = fetchFromGitHub {
+    owner = "cert-manager";
+    repo = "cert-manager";
+    rev = "v${version}";
+    sha256 = "sha256-h7GyzjVrfyMHY7yuNmmsym6KGKCQr5R71gjPBTUeMCg=";
+  };
+
+  vendorSha256 = "sha256-UYw9WdQ6VwzuuiOsa1yovkLZG7NmLYSW51p8UhmQMeI=";
+
+  subPackages = [ "cmd/ctl" ];
+
+  ldflags = [ "-s" "-w" ];
+
+  nativeBuildInputs = [ installShellFiles ];
+
+  postInstall = ''
+    mv $out/bin/ctl $out/bin/cmctl
+    installShellCompletion --cmd cmctl \
+      --bash <($out/bin/cmctl completion bash) \
+      --fish <($out/bin/cmctl completion fish) \
+      --zsh <($out/bin/cmctl completion zsh)
+  '';
+
+  meta = with lib; {
+    description = "A CLI tool for managing Cert-Manager service on Kubernetes clusters";
+    downloadPage = "https://github.com/cert-manager/cert-manager";
+    license = licenses.asl20;
+    homepage = "https://cert-manager.io/";
+    maintainers = with maintainers; [ superherointj ];
+  };
+}
+