Fix Stale Python OS Environment when EWTS runs with ngen.#96
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cmaynard-ngwpc merged 1 commit intodevelopmentfrom Feb 18, 2026
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kyle-larkin
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This makes sense, and the helper seems pretty straightforward.
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ngen ( C++ ) is calling setenv() after Python has already initialized os.environ, and Python’s os.environ mapping is not automatically refreshed when the environment is mutated from C/C++ to run python code with ngen.
Python keeps an internal view of the environment that includes things set before Python started (like NGEN_RESULTS_DIR), but not variables injected later from C++ (like NGEN_LOG_FILE_PATH and _LOGLEVEL).
Added a helper method to ensure the Python os environment is not stale when ngen-focing BMI runs.
Merging this to
developmentbecause the release being delivered on February 25, 2026 does not include BMI Forcing and this only is an issue when running ngen with BMI Forcing.