modules/dev-tools: compile kubectl completions on build time

modules/home-manager/programs/dev-tools.nix

@@ -2,6 +2,10 @@
 
 let
   cfg = config.local.programs.dev-tools;
+
+  kubectlCompletionsZsh = pkgs.runCommand "kubectl-completion.zsh" {} ''
+    ${lib.getExe pkgs.kubectl} completion zsh > $out
+  '';
 in
 {
   options.local.programs.dev-tools = with lib; {
@@ -98,7 +102,7 @@ in
       ];
 
       programs.zsh.initExtra = ''
-        source <(kubectl completion zsh)
+        source ${kubectlCompletionsZsh}
       '';
     })