Make pyproject.toml and req.oldest.txt versions match, fix issues, add validation

[lmolkova]

Align oldest dep versions with pytproject.toml and add script to validate they match so that we actually test what we declare compatibility with.

google genai and langchain got some version bumps and compatibility fixes

[opentelemetry-pr-dashboard]

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[lmolkova]

can't test with wrapt < 1.17 due to some issues and python version incompatibility

[Copilot]

Pull request overview

This PR aligns “oldest dependency” test pins with the minimum versions declared in package pyproject.toml files, and adds CI enforcement to prevent drift—alongside a few compatibility adjustments for google-genai interactions and langchain VCR-backed tests.

Changes:

• Add a repository script + CI job to validate tests/requirements.oldest.txt pins match pyproject.toml lower bounds.
• Introduce an oldest/latest unit-test matrix for the LangChain instrumentation and adjust VCR matching/cassettes for version differences.
• Update Google GenAI “oldest” pins and gate Interactions instrumentation/tests when the underlying SDK version doesn’t support it.

Reviewed changes

Copilot reviewed 16 out of 17 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
uv.lock	Regenerated lockfile updates (notably registry URL normalization) and metadata specifier updates reflecting dependency bound changes.
util/opentelemetry-test-util-genai/src/opentelemetry/test_util_genai/vcr.py	Adds a custom json_body VCR matcher and request-body normalization to make cassettes resilient to small request-shape differences.
tox.ini	Splits LangChain unit tests into {oldest,latest} tox environments and wires requirements files accordingly.
scripts/check_oldest_deps.py	New validator script to compare pyproject.toml lower bounds vs tests/requirements.oldest.txt pins/editables.
instrumentation/opentelemetry-instrumentation-google-genai/tests/requirements.oldest.txt	Adjusts oldest pins (notably google-genai==1.32.0) and adds wrapt==1.17.0.
instrumentation/opentelemetry-instrumentation-google-genai/tests/interactions/test_parser.py	Skips interactions parser tests when the installed google-genai lacks interactions support.
instrumentation/opentelemetry-instrumentation-google-genai/tests/interactions/test_e2e.py	Skips interactions E2E tests when unsupported by the installed SDK version.
instrumentation/opentelemetry-instrumentation-google-genai/tests/interactions/base.py	Makes interactions test base robust to SDK module moves and to versions without interactions.
instrumentation/opentelemetry-instrumentation-google-genai/src/opentelemetry/instrumentation/google_genai/interactions.py	Makes interactions instrumentation conditional (_HAS_INTERACTIONS) and safely no-op on unsupported SDK versions.
instrumentation/opentelemetry-instrumentation-google-genai/pyproject.toml	Updates OTel dependency bounds and raises the minimum wrapt version.
instrumentation/opentelemetry-instrumentation-genai-langchain/tests/test_llm_call.py	Adjusts assertions and VCR cassette selection to support older/newer LangChain integrations.
instrumentation/opentelemetry-instrumentation-genai-langchain/tests/requirements.oldest.txt	Adds a dedicated oldest-pins file for LangChain unit tests.
instrumentation/opentelemetry-instrumentation-genai-langchain/tests/requirements.latest.txt	Converts LangChain “latest” requirements to explicit pins for reproducibility.
instrumentation/opentelemetry-instrumentation-genai-langchain/tests/conftest.py	Forces Gemini transport to REST and configures VCR to match on json_body.
instrumentation/opentelemetry-instrumentation-genai-langchain/tests/cassettes/test_us_amazon_nova_lite_v1_0_bedrock_llm_call_old.yaml	Adds an “old Bedrock” cassette (explicitly marked for re-recording).
instrumentation/opentelemetry-instrumentation-genai-langchain/src/opentelemetry/instrumentation/genai/langchain/callback_handler.py	Normalizes models/<name> model IDs to match expected model-name formatting.
.github/workflows/misc.yml	Adds a CI job that runs the new oldest-deps consistency check script.