kubevela: use writableTmpDirAsHomeHook

pkgs/by-name/ku/kubevela/package.nix

@@ -2,13 +2,16 @@
   buildGoModule,
   fetchFromGitHub,
   installShellFiles,
+  writableTmpDirAsHomeHook,
   lib,
   stdenv,
   testers,
   kubevela,
   nix-update-script,
 }:
-
+let
+  canGenerateShellCompletions = stdenv.buildPlatform.canExecute stdenv.hostPlatform;
+in
 buildGoModule (finalAttrs: {
   pname = "kubevela";
   version = "1.10.6";
@@ -30,11 +33,7 @@ buildGoModule (finalAttrs: {
 
   subPackages = [ "references/cmd/cli" ];
 
-  env = {
-    CGO_ENABLED = 0;
-    # Workaround for permission issue in shell completion
-    HOME = "$TMPDIR";
-  };
+  env.CGO_ENABLED = 0;
 
   installPhase = ''
     runHook preInstall
@@ -42,8 +41,14 @@ buildGoModule (finalAttrs: {
     runHook postInstall
   '';
 
-  nativeBuildInputs = [ installShellFiles ];
-  postInstall = lib.optionalString (stdenv.buildPlatform.canExecute stdenv.hostPlatform) ''
+  nativeBuildInputs = [
+    installShellFiles
+  ]
+  ++ lib.optionals canGenerateShellCompletions [
+    writableTmpDirAsHomeHook # Workaround for permission issue in shell completion
+  ];
+
+  postInstall = lib.optionalString canGenerateShellCompletions ''
     installShellCompletion --cmd vela \
       --bash <($out/bin/vela completion bash) \
       --zsh <($out/bin/vela completion zsh)