kubectl: reduce closure size

before: 482M
after: 38M

pkgs/applications/networking/cluster/kubectl/default.nix

@@ -0,0 +1,33 @@
+{ stdenv, lib, kubernetes }:
+
+stdenv.mkDerivation {
+  name = "kubectl-${kubernetes.version}";
+
+  # kubectl is currently part of the main distribution but will eventially be
+  # split out (see homepage)
+  src = kubernetes;
+
+  outputs = [ "out" "man" ];
+
+  doBuild = false;
+
+  installPhase = ''
+    mkdir -p \
+      "$out/bin" \
+      "$out/share/bash-completion/completions" \
+      "$out/share/zsh/site-functions" \
+      "$man/share/man/man1"
+
+    cp bin/kubectl $out/bin/kubectl
+
+    cp "${kubernetes.man}/share/man/man1"/kubectl* "$man/share/man/man1"
+
+    $out/bin/kubectl completion bash > $out/share/bash-completion/completions/kubectl
+    $out/bin/kubectl completion zsh > $out/share/zsh/site-functions/_kubectl
+  '';
+
+  meta = kubernetes.meta // {
+    description = "Kubernetes CLI";
+    homepage = "https://github.com/kubernetes/kubectl";
+  };
+}

pkgs/top-level/all-packages.nix

@@ -17916,11 +17916,9 @@ in
 
   kubeval = callPackage ../applications/networking/cluster/kubeval { };
 
-  kubernetes = callPackage ../applications/networking/cluster/kubernetes {  };
+  kubernetes = callPackage ../applications/networking/cluster/kubernetes { };
 
-  kubectl = (kubernetes.override { components = [ "cmd/kubectl" ]; }).overrideAttrs(oldAttrs: {
+  kubectl = callPackage ../applications/networking/cluster/kubectl { };
-    name = "kubectl-${oldAttrs.version}";
-  });
 
   kubernetes-helm = callPackage ../applications/networking/cluster/helm { };