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b0b5849fa4
fix(ci): narrow --prerelease=allow to wheels in cross-platform install tests
Nightly cross-platform install tests were failing on Python 3.12/3.13 with
a pydantic ValidationError at langchain_core import time:
File ".../langchain_core/runnables/passthrough.py", line 349, in <module>
_graph_passthrough: RunnablePassthrough = RunnablePassthrough()
pydantic_core._pydantic_core.ValidationError: 1 validation error for
RunnablePassthrough
name
Field required ...
Cause: --prerelease=allow was pulling pydantic 2.14.0a1 as a transitive
dep, which is incompatible with langchain-core 1.4.0's top-level
RunnablePassthrough() initialization.
We need pre-releases enabled for the nightly langflow* .dev wheels we
pass on the command line, but not for transitive deps. Switch to
--prerelease=if-necessary-or-explicit, which keeps the explicit .dev
wheel installs working while resolving stable pydantic for everything
else.