vscode: preserve permissions of unpacked ASAR files

pkgs/applications/editors/vscode/generic.nix

@@ -414,6 +414,13 @@ stdenv.mkDerivation (
           packed="resources/app/node_modules.asar"
           unpacked="resources/app/node_modules"
           asar extract "$packed" "$unpacked"
+
+          # FIXME: drop this when `asar extract` preserves the mode of unpacked files in
+          # the archives Microsoft ships, fixes https://github.com/NixOS/nixpkgs/issues/573021
+          if [ -d "$packed.unpacked" ]; then
+            cp -a "$packed.unpacked/." "$unpacked/"
+          fi
+
           substituteInPlace $unpacked/@vscode/sudo-prompt/index.js \
             --replace-fail "/usr/bin/pkexec" "/run/wrappers/bin/pkexec" \
             --replace-fail "/bin/bash" "${bash}/bin/bash"