[FIXED] How to make conda or mamba verbose using environment variable?

Issue

I am looking for an environment variable I can set to make mamba verbose while it is resolving the dependency to see if it is stuck at a certain stage.

Solution

This can be done either through Conda configuration (i.e., .condarc) or an environment variable. The environment variable has the highest priority, so I recommend setting default behavior via the configuration such that the environment variable is still available for overriding.

There is an (older) article detailing the Conda configuration system: "The Conda Configuration Engine for Power Users".

Conda Configuration

The configuration variable is verbosity. Here is the description:

$ conda config --describe verbosity
# # verbosity (int)
# #   aliases: verbose
# #   Sets output log level. 0 is warn. 1 is info. 2 is debug. 3 is trace.
# # 
# verbosity: 0

which shows 0 is the default. It can be set with

conda config --set verbosity 2  # debug by default

Environment Variable

All Conda configuration variables can be set via CONDA_* environment variables. To override the verbosity configuration, one can use:

## temporary setting
CONDA_VERBOSITY=2 conda info

## permanent setting, e.g., in a .bashrc or .bash_profile
export CONDA_VERBOSITY=2

Answered By - merv

Answer Checked By - Marilyn (PHPFixing Volunteer)