I’ve just released version 4.6.4 of middleman-s3_sync, a gem that synchronizes Middleman-built websites to Amazon S3.
This release completely removes the map gem dependency and replaces it with a native Ruby implementation.
Background
The map gem provides a string/symbol indifferent hash implementation. After being stable at version 6.6.0 for about a decade, the original author unexpectedly released version 8.x, which introduced breaking changes that caused installation failures.
While we temporarily locked the dependency to version 6.6.0 in v4.6.3, it became clear that relying on an unmaintained library was not a sustainable solution.
What Changed
Version 4.6.4 introduces IndifferentHash, a simple native Ruby class that provides the same functionality as the map gem:
- String/symbol indifferent key access
- Dot notation for accessing values
- Zero external dependencies
- Fully tested with the existing test suite
The implementation is straightforward and maintainable, living entirely within the gem’s codebase.
Benefits
- More stable: No dependency on unmaintained external libraries
- Fewer dependencies: One less gem to install and manage
- Better control: The functionality is now part of the gem itself
- No breaking changes: The API remains exactly the same
Upgrading
To upgrade to the latest version, update your Gemfile:
1
| gem 'middleman-s3_sync', '~> 4.6.4'
|
Then run:
1
| bundle update middleman-s3_sync
|
This is a drop-in replacement with no breaking changes—your existing code will continue to work exactly as before.
Acknowledgments
Thanks to Chad Wilson for identifying the issue in PR #165 and proposing the initial workaround.
As always, the source code is available on GitHub, and the gem is available on RubyGems.
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