diff --git a/pkgs/by-name/as/ast-grep/package.nix b/pkgs/by-name/as/ast-grep/package.nix
index 4783207b3a6f..e03894c63e96 100644
--- a/pkgs/by-name/as/ast-grep/package.nix
+++ b/pkgs/by-name/as/ast-grep/package.nix
@@ -4,7 +4,6 @@
   fetchFromGitHub,
   stdenv,
   installShellFiles,
-  buildPackages,
   versionCheckHook,
   nix-update-script,
   enableLegacySg ? false,
@@ -35,23 +34,18 @@ rustPlatform.buildRustPackage (finalAttrs: {
     "--package ast-grep --bin ast-grep"
   ] ++ lib.optionals enableLegacySg [ "--package ast-grep --bin sg" ];
 
-  postInstall = lib.optionalString (stdenv.hostPlatform.emulatorAvailable buildPackages) (
-    let
-      emulator = stdenv.hostPlatform.emulator buildPackages;
-    in
-    ''
-      installShellCompletion --cmd ast-grep \
-        --bash <(${emulator} $out/bin/ast-grep completions bash) \
-        --fish <(${emulator} $out/bin/ast-grep completions fish) \
-        --zsh <(${emulator} $out/bin/ast-grep completions zsh)
-    ''
-    + lib.optionalString enableLegacySg ''
+  postInstall = lib.optionalString (stdenv.buildPlatform.canExecute stdenv.hostPlatform) ''
+    installShellCompletion --cmd ast-grep \
+      --bash <($out/bin/ast-grep completions bash) \
+      --fish <($out/bin/ast-grep completions fish) \
+      --zsh <($out/bin/ast-grep completions zsh)
+    ${lib.optionalString enableLegacySg ''
       installShellCompletion --cmd sg \
-        --bash <(${emulator} $out/bin/sg completions bash) \
-        --fish <(${emulator} $out/bin/sg completions fish) \
-        --zsh <(${emulator} $out/bin/sg completions zsh)
-    ''
-  );
+        --bash <($out/bin/sg completions bash) \
+        --fish <($out/bin/sg completions fish) \
+        --zsh <($out/bin/sg completions zsh)
+    ''}
+  '';
 
   nativeInstallCheckInputs = [
     versionCheckHook