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Micromamba is now deprecated as of July 2025 #369

@yantosca

Description

@yantosca

Your name

Bob Yantosca

Your affiliation

Harvard + GCST

What happened? What did you expect to happen?

As described at https://github.com/conda-forge/miniforge/blob/main/README.md, the Mambaforge installer (which also includes MicroMamba) is deprecated:


🚨 Mambaforge (Deprecated as of July 2024) 🚨

Update for July 2024:

As of July 2024, Mambaforge is deprecated. We suggest users switch to
Miniforge3 immediately. These installers will be retired from new releases
after January 2025. To assist in the migration, we will be introducing rollowing
brownouts to the latest Mambaforge installer. Installers up to version 24.5.0-1
will not have any brownouts. 24.5.0-1 will include a warning message.
Installers 2024.5.0-2 and later will have the following brownout schedule:

  • The installer will refuse to proceed every two weeks in October
  • The installer will refuse to proceed every ten days in November
  • The installer will refuse to proceed every five days in December
  • The installer will refuse to proceed in 2025+

Previous information:

With the release of
Miniforge3-23.3.1-0, that incorporated the changes in
#277, the packages and
configuration of Mambaforge and Miniforge3 are now identical. The
only difference between the two is the name of the installer and, subsequently,
the default installation directory.

We recommend switching to Miniforge3 immediately. These installers will be
retired in January 2025. To assist in the migration to Miniforge3 for CI users, we've stopped
the latest Mambaforge (24.5+) installer from proceeding with following schedule

  • Every two weeks in October
  • Every ten days in November
  • Every five days in December
  • Never in 2025

You can still find the latest installers in the 24.9.2 release.

What are the steps to reproduce the bug?

Installing Mamba as described in our documentation may lead to an error such as this:

Image

Please attach any relevant configuration and log files.

No response

What GCPy version were you using?

1.6.3

What environment were you running GCPy on?

Personal computer

What python environment were you using?

See: https://github.com/geoschem/gcpy/blob/main/docs/environment_files/gcpy_environment_py312.yml

Will you be addressing this bug yourself?

Yes

Additional information

We will update the documentation at gcpy.readthedocs.io accordingly for the next GCPy release.

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category: BugSomething isn't workingnever staleNever label this issue as staletopic: User EnvironmentRelating to python and/or conda environment

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