bundlerApp: set __StructuredAttrs = true for result package

doc/release-notes/rl-2611.section.md

@@ -21,6 +21,9 @@
   By the time of this release, Homebrew will offer only limited [Tier 3](https://docs.brew.sh/Support-Tiers#tier-3) support for the platform, but MacPorts will likely continue to support it for a long time.
   We also recommend users consider installing NixOS, which should continue to run on essentially all Intel Macs, especially after Apple stops security support for macOS 26 in 2028.
 
+- `bundlerApp` now sets `__structuredAttrs = true` for its result package.
+  Out-of-tree packages passing `postBuild` to `bundlerApp` should examine if their `postBuild` commands are compatible with structured attributes.
+
 - `databricks-cli` has been updated from `0.290.2` to `1.x.x`, the first major release. OAuth tokens for interactive logins (`auth_type = databricks-cli`) are now stored in the OS-native secure store by default (Secret Service on Linux) instead of `~/.databricks/token-cache.json`; cached tokens from older versions are not migrated, so run `databricks auth login` once per profile after upgrading. To keep the previous file-backed storage, set `DATABRICKS_AUTH_STORAGE=plaintext` or add `auth_storage = plaintext` under `[__settings__]` in `~/.databrickscfg`. Additionally, the `vector_search_endpoints` DABs resource renamed `min_qps` to `target_qps` (and the `vector-search-endpoints` command renamed `--min-qps` to `--target-qps`). See the [upstream changelog](https://github.com/databricks/cli/blob/main/CHANGELOG.md) for details.
 
 - `hurl` has been updated to `8.x.x` which has some breaking changes. See [upstream changelog](https://github.com/Orange-OpenSource/hurl/releases/tag/8.0.0) for details.

pkgs/development/ruby-modules/bundler-app/default.nix

@@ -56,6 +56,8 @@ let
       "gemdir"
     ]
     // {
+      __structuredAttrs = true;
+
       inherit preferLocalBuild allowSubstitutes; # pass the defaults
       inherit (basicEnv) version pname;