2.1.0

modern-di-flask 2.1.0 — adopt the modern-di integration kit

Maintenance release. No public API change — FromDI, inject,
setup_di, fetch_di_container, and flask_request_provider keep their
signatures and behavior. Swaps this package's hand-rolled connection
dispatch and marker resolution for the shared primitives in
modern_di.integrations,
shipped in
modern-di 2.28.0.
Fifth of 13 planned adapter conversions across the modern-di ecosystem
(after
modern-di-starlette 2.2.0,
modern-di-fastapi 2.10.0,
modern-di-litestar 2.13.0,
and
modern-di-aiohttp 2.2.0).
The simplest conversion so far: Flask has exactly one connection type and is
fully synchronous.

Internal refactors

• _enter_request now derives scope/context via
  integrations.bind(flask_request_provider, connection) instead of
  hand-writing scope=Scope.REQUEST, context={Request: connection}. Flask
  has no WebSocket counterpart, so there's only ever one provider — no
  classify_connection dispatch is needed anywhere.
• No Container context-manager block is introduced. Flask's
  before_request/teardown_appcontext stay two separate hook callbacks,
  unchanged in shape — unlike the middleware-wrapping pattern used in the
  starlette/fastapi/litestar/aiohttp conversions.
• _FromDI/_parse_inject_params are gone. FromDI = integrations.from_di; inject now composes
  integrations.parse_markers/integrations.resolve_markers.
• The three hand-written "__modern_di_injected__" string-attribute
  touch points are now integrations.is_injected/integrations.mark_injected —
  same underlying attribute name, so this is a behavioral no-op.

Packaging

• Bumps the modern-di floor to >=2.28,<3.

Downstream

No action needed — the public API (FromDI, inject, setup_di,
fetch_di_container, flask_request_provider) is unchanged. Upgrading
only requires modern-di>=2.28.0.

Internals

• 100% line coverage; ruff, ty clean across Python 3.10–3.14.
• Built via subagent-driven-development: 4 planned tasks, each with an
  independent spec+quality review; a whole-branch review before merge.