mamba 2 no longer honours CONDA_ENVS_PATH

[mathause]

Troubleshooting docs

• My problem is not solved in the Troubleshooting docs

Anaconda default channels

• I do NOT use the Anaconda default channels (pkgs/* etc.)

How did you install Mamba?

Mambaforge or latest Miniforge

Search tried in issue tracker

done

Latest version of Mamba

• My problem is not solved with the latest version

Tried in Conda?

I do not have this problem with Conda, just with Mamba

Describe your issue

The latest mamba (2.0.4) does not seem to honor $CONDA_ENVS_PATH (I have not tested in other versions of 2.0). So

export CONDA_ENVS_PATH=/home/mathause/test/envs
mamba create -n test_env python

installs into my default location instead of ~/test/envs. This used to work in mamba < 2. Similarly mamba env list does not show environments in locations defined via CONDA_ENVS_PATH.

I could maybe go via MAMBA_ROOT_PREFIX but would prefer not to need to set each path twice (once for mamba and once for conda). Also does MAMBA_ROOT_PREFIX support several locations (a/envs:b/envs)?

mamba info / micromamba info

mamba info

       libmamba version : 2.0.4
          mamba version : 2.0.4
           curl version : libcurl/8.10.1 OpenSSL/3.4.0 zlib/1.3.1 zstd/1.5.6 libssh2/1.11.1 nghttp2/1.64.0
     libarchive version : libarchive 3.7.7 zlib/1.3.1 liblzma/5.2.6 bz2lib/1.0.8 liblz4/1.9.3 libzstd/1.5.6
       envs directories : /home/mathause/.conda/envs
                          /home/mathause/test/envs
          package cache : /home/mathause/.conda/pkgs
            environment : base (active)
           env location : /home/mathause/.mambabase
      user config files : /home/mathause/.mambarc
 populated config files : /home/mathause/.condarc
                          /home/mathause/.mambabase/.condarc
       virtual packages : __unix=0=0
                          __linux=6.8.0=0
                          __glibc=2.35=0
                          __archspec=1=x86_64_v3
               channels : https://conda.anaconda.org/conda-forge/linux-64
                          https://conda.anaconda.org/conda-forge/noarch
       base environment : /home/mathause/.mambabase
               platform : linux-64

Logs

echo $CONDA_ENVS_PATH; mamba create -n test_env python

/home/mathause/test/envs



conda-forge/linux-64                                        Using cache
conda-forge/noarch                                          Using cache


Transaction

  Prefix: /home/mathause/.conda/envs/test_env

  Updating specs:

   - python

...

environment.yml

-

~/.condarc

channels:
  - conda-forge

envs_dirs:
  - /home/mathause/.conda/envs

pkgs_dirs:
  - /home/mathause/.conda/pkgs