fix helix donnot have fish completions

pkgs/helix.nix

@@ -4,40 +4,45 @@
   inputs,
   ...
 }:
-pkgs.runCommand "helix-wrapped"
-  {
-    buildInputs = [ pkgs.makeWrapper ];
-  }
-  ''
-    mkdir -p $out/bin
-    makeWrapper "${lib.getExe inputs.helix.packages."${pkgs.system}".default}" $out/bin/hx \
-    --suffix PATH : ${
-      lib.makeBinPath (
-        with pkgs;
-        [
-          rustfmt
-          clang-tools
-          libxml2
-          typstyle
-          pyright
-          ruff
-          gotools
-          yaml-language-server
-          taplo
-          markdown-oxide
-          nixd
-          deno
-          nixfmt-rfc-style
-          vscode-langservers-extracted
-          fish-lsp
-          gopls
-          golangci-lint-langserver
-          tinymist
-          delve
-          lldb
-          rust-analyzer
-          nil
-        ]
-      )
-    }
-  ''
+let
+  helix = inputs.helix.packages."${pkgs.system}".default;
+  runtimeInputs = (
+    with pkgs;
+    [
+      rustfmt
+      clang-tools
+      libxml2
+      typstyle
+      pyright
+      ruff
+      gotools
+      yaml-language-server
+      taplo
+      markdown-oxide
+      nixd
+      deno
+      nixfmt-rfc-style
+      vscode-langservers-extracted
+      fish-lsp
+      gopls
+      golangci-lint-langserver
+      tinymist
+      delve
+      lldb
+      rust-analyzer
+      nil
+    ]
+  );
+in
+pkgs.symlinkJoin {
+  name = "helix-wrapped";
+  paths = [ helix ];
+  inherit (helix) meta;
+  buildInputs = [
+    pkgs.makeWrapper
+  ];
+  postBuild = ''
+    wrapProgram $out/bin/hx \
+    --suffix PATH : ${lib.makeBinPath runtimeInputs}
+  '';
+}