fix(container): union-safe bean-name derivation (v26.06.95)#124
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PEP 604 union impl types (X | Y) are types.UnionType and lack __name__, so default
bean-name derivation ('rep.name or rep.impl_type.__name__') raised AttributeError
during ApplicationContext.start() (surfaced as BeanCreationException), breaking
startup for any app with a union-typed bean.
Add a union-safe Registration.display_name (falls back to union member names then
str()) and use it for bean-name derivation + scope-resolution error messages. Adds
regression tests; bumps 26.6.94 -> 26.6.95; updates CHANGELOG + README badge.
This was referenced Jun 10, 2026
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Summary
Registering a bean whose implementation type is a PEP 604 union (
X | Y, atypes.UnionType) crashed application startup:surfaced as a
BeanCreationExceptionfromApplicationContext.start()— any app with a union-typed bean failed to boot.Fix
Registration.display_nameproperty: explicitname→ elseimpl_type.__name__→ else the union member names →str(). Never raises.application_context.py) and scope-resolution error messages (container.py).tests/container/test_registration_display_name.py.Release
26.6.94→26.6.95;CHANGELOG.md+ README version badge updated.v26.06.95pushed.Verification
tests/container+tests/context→ 340 passed; new regression tests 4 passed.v26.06.95(was crashing onv26.06.94).