Describe the Enhancement

With #3189 , MET regression tests are using logic from metplus/util/diff_util.py. The nightly test scripts will be looking for the METplus directory assigned to the METPLUS_DIR variable in internal/scripts/environment/development.seneca.

In order to apply the latest differencing logic, this local METplus develop branch should be updated regularly.

Per @georgemccabe , one option would be to install the METplus repo in the conda environments the with -e pip install option so pulling changes in the source code automatically apply to the installed version, so these would benefit from regular (daily?) updates from develop. However, this approach makes reproducibility difficult because you won't be able to see what was used on a given day.

Another option would be to incorporate the checkout of METplus within the MET nightly build scripts so we have a clear snapshot of what was used each day. This might get us into a weird circular dependency issue since we eventually want to fix/recreate the build scripts in the METplus repo that are intended to obtain the other components, like MET, METdataio, METcalcpy, and METplotpy.

Time Estimate

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Issues should represent approximately 1 to 3 days of work.

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Define Related Issue(s)

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• METplus, MET, METdataio, METviewer, METexpress, METcalcpy, METplotpy

Enhancement Checklist

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