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May 2025 Releases

· 3 min read
Travis Hathaway
Travis Hathaway
Conda maintainer 👷🔧
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The May 2025 releases included updates to conda, conda-build, conda-libmamba-solver, and conda-index! 🎉 All of these have been released to both main and conda-forge channels.

Changes in conda 25.5.0​

To update conda to the latest version, run:

conda install -n base conda=25.5.0

Notable Changes:

  • Add environment_specifiers plugin hooks to allow plugin authors to read different file formats and sources.
  • Add a plugin hook for PrefixData loaders and use it to wrap the existing PyPI interoperability features. These are now present in conda.plugins.prefix_data_loaders.pypi.
  • Add a --fields flag to conda list that allows to customize the content of the human output format (i.e., the default output format).
  • Add a plugin hook for adding actions during the transaction process.
  • Add a default_activation_env config option to simplify environment activation after initialization and when running conda activate without parameter.
  • Add support for conda plugin settings to the conda config command.

Check out the full changelog for more: 25.5.0

Changes in conda-build 25.5.0​

To update conda-build to the latest version, run:

conda install -n base conda-build=25.5.0

Notable Changes:

  • Require conda-libmamba-solver 25.4.0 or greater to fix issues with spaces in CONDA_BLD_PATH.
  • Restore is and is not operators to selector mini-language.

Check out the full changelog for more: 25.5.0

Changes in conda-libmamba-solver 25.4.0​

To update conda-libmamba-solver to the latest version, run:

conda install -n base conda-libmamba-solver=25.4.0

Notable Changes:

  • Use conda.reporters.get_spinner() to support conda reporter plugins.

Check out the full changelog for more: 25.4.0

Changes in conda-index 0.6.1​

To update conda-index to the latest version, run:

conda install -n base conda-index=0.6.1

Notable Changes:

  • Sharded repodata bug fix
  • Automatic PyPI uploads

Check out the full changelog for more: 0.6.1

We ❤️ Our Community​

Altogether, we had 3 new contributors this release cycle; thank you to all of our open source community members for helping making these improvements possible.