oxur/twyg: 0.6.3 - Support Partial Configs

Overview

Version 0.6.3 is a bug fix release addressing an issue where twyg::Opts required all fields to be present during deserialization, making it impractical to use in partial TOML/YAML/JSON configurations. Users can now specify only the fields they want to override and rely on defaults for the rest. This release also relaxes version specifiers for some dependencies.

Bug Fixes

Partial Deserialization of Opts (Closes #7)

Issue: When embedding twyg::Opts directly in an application config struct, users were forced to specify every field in their configuration file. A minimal config like:

[logging]
level = "debug"

Would fail with:

TOML parse error at line 3, column 1
  |
3 | [logging]
  | ^^^^^^^^^
missing field `coloured`

Root Cause: Four fields on the Opts struct (coloured, output, level, report_caller) were missing #[serde(default)] attributes, while the remaining seven fields already had them.

Solution: Added #[serde(default)] to the four missing fields. All four types already implement Default with values matching Opts::default():

• coloured: bool -- defaults to false
• output: Output -- defaults to Output::Stdout
• level: LogLevel -- defaults to LogLevel::Error
• report_caller: bool -- defaults to false

Impact: Users can now embed twyg::Opts in their config structs and provide minimal configurations, specifying only the fields they want to override.

Files Changed:

• src/opts.rs -- Added #[serde(default)] to 4 fields, added unit test
• tests/integration_tests.rs -- Added integration test for partial TOML deserialization

Dependencies

Version Specifier Cleanup

Relaxed version specifiers for two dependencies to follow standard semver conventions:

• thiserror: "2.0" -> "2" (resolved: 2.0.18)
• anyhow (dev): "1.0.100" -> "1" (resolved: 1.0.101)

Lockfile Updates

Updated transitive dependencies via Cargo.lock:

• chrono: 0.4.42 -> 0.4.43
• thiserror: 2.0.17 -> 2.0.18
• anyhow: 1.0.100 -> 1.0.101
• Various other transitive dependency updates (wasm-bindgen, windows-core, etc.)

Backward Compatibility

This release maintains full backward compatibility with 0.6.2:

• No API changes
• No breaking changes
• Existing configurations continue to work
• Fixes only enhance existing functionality

Installation

[dependencies]
twyg = "0.6.3"

Or update existing installations:

cargo update twyg

Full Changelog: https://github.com/oxur/twyg/compare/0.6.2...0.6.3