`zppy` picking up `.local` in error

`zppy` appears to erroneously use `.local`, as described in https://github.com/E3SM-Project/zppy/issues/484#issuecomment-1687814817. This may be something in `zppy` or it may be an issue with how I have conda set up.

Start by reading the linked comment in E3SM-Project/zppy#484 and reproduce the `.local` error with the reported conda setup. Determine whether the behavior originates in zppy or the environment, then document the cause and verify that the error no longer uses `.local` unexpectedly.

Written by the indexing model from the issue text.