@jar398: I thought that peyotl was used only by ```phylesystem-api```, but it looks like it is now also a dependency of the study-curation app. @mtholder, is this correct?

There are a few other debugging properties used by other components (see the [sample.config](https://github.com/OpenTreeOfLife/opentree/blob/master/deploy/sample.config#L132) file used by deployment tools). I suspect all of these will default to sensible (quiet) values:
```
# -----
# For development and debugging purposes, we can also set debug levels and
# logfile path information for some components.

# OPEN_TREE_API_LOGGING_LEVEL=debug
# OPEN_TREE_API_LOGGING_FILEPATH=/home/opentree/log/api.log
# OPEN_TREE_API_LOGGING_FORMATTER=rich
# export PEYOTL_LOGGING_LEVEL=debug
# export PEYOTL_LOG_FILE_PATH=/home/opentree/log/peyotl.log
```