[dependabot]

Bumps pydantic-settings from 2.15.0 to 2.16.2.

Release notes

Sourced from pydantic-settings's releases.

v2.16.2

Highlights

This patch release fixes env decoding of nested dictionary values, CliApp handling of AliasPath, nested secrets directory precedence and discriminated union defaults with nested_model_default_partial_update.

Behavior changes

• An explicit secrets_dir on NestedSecretsSettingsSource now takes precedence (#1093). Previously it was ignored when the wrapped SecretsSettingsSource inherited a directory from model config, and an explicit empty list was masked too. The order is now: the wrapper's secrets_dir argument, then the wrapped source's directory, then model config. If you pass both Settings(_secrets_dir=...) and NestedSecretsSettingsSource(..., secrets_dir=...), the wrapper's argument now wins.

Bug fixes

Env and dotenv sources

• Dictionary values typed as a union, such as dict[str, list[str] | str] or dict[str, list[str] | None], now JSON-decode values set through env_nested_delimiter (#1089, #1097). Only JSON arrays and objects are decoded, so plain values like 123, true or "quoted" are kept as strings. Decoding follows enable_decoding and the NoDecode/ForceDecode of the field that holds the dict, and type aliases and Annotated value types are resolved.
• Nested dictionary values such as dict[str, list[dict[str, str]]] are decoded at the right level again (#1109), so APP_VALUES__X='[{"k":"v"}]' no longer reaches validation as a string.

CLI

• CliApp.run now rebuilds AliasPath inputs for BaseModel and pydantic dataclass commands (#1096). A supplied path used to be reduced to the field name, which failed validation. AliasChoices priority is respected and unsupplied path defaults are left to the model.

Discriminated union defaults

• With nested_model_default_partial_update=True, inner discriminated unions written as Annotated[..., Field(discriminator='...')] are now detected (#1076). When the incoming tag selects another member, the default's fields are no longer merged into it.
• A stdlib dataclass default on a discriminated union field no longer raises NameError when another field of the dataclass has a string annotation naming a local class (#1077). Only the discriminator's own annotation is resolved now.

What's Changed

• build(deps): bump the python-packages group with 3 updates by @​dependabot[bot] in pydantic/pydantic-settings#1056
• Detect nested Field discriminators in default partial updates by @​digit50 in pydantic/pydantic-settings#1076
• Resolve only the discriminator annotation of stdlib dataclass defaults by @​digit50 in pydantic/pydantic-settings#1077
• Decode nested dictionary values with complex union types by @​chering14 in pydantic/pydantic-settings#1089
• Fix regressions from nested dict union value decoding (#1089) by @​hramezani in pydantic/pydantic-settings#1097
• Fix explicit nested secrets directory precedence by @​DivyamTalwar in pydantic/pydantic-settings#1093
• Fix CliApp reconstruction of AliasPath inputs by @​DivyamTalwar in pydantic/pydantic-settings#1096
• Fix JSON decoding of nested dictionary environment values by @​Hugohong258 in pydantic/pydantic-settings#1109
• Prepare release 2.16.2 by @​hramezani in pydantic/pydantic-settings#1111

New Contributors

• @​digit50 made their first contribution in pydantic/pydantic-settings#1076
• @​chering14 made their first contribution in pydantic/pydantic-settings#1089
• @​DivyamTalwar made their first contribution in pydantic/pydantic-settings#1093
• @​Hugohong258 made their first contribution in pydantic/pydantic-settings#1109

Full Changelog: pydantic/pydantic-settings@v2.16.1...v2.16.2

v2.16.1

Highlights

... (truncated)

Commits

• 94150a0 Prepare release 2.16.2 (#1111)
• 9e02de0 Fix JSON decoding of nested dictionary environment values (#1109)
• 7e2dacb Fix CliApp reconstruction of AliasPath inputs (#1096)
• 2d1f924 Fix explicit nested secrets directory precedence (#1093)
• e9588ae Fix regressions from nested dict union value decoding (#1089) (#1097)
• e71a53e Decode nested dictionary values with complex union types (#1089)
• 8dc9e05 Resolve only the discriminator annotation of stdlib dataclass defaults (#1077)
• c50c853 Detect nested Field discriminators in default partial updates (#1076)
• 9aabb8a build(deps): bump the python-packages group with 3 updates (#1056)
• 4e286e2 Prepare release 2.16.1 (#1087)
• Additional commits viewable in compare view