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Enhancements

  • Add three new fields to conda.plugins.types.CondaVirtualPackage class:
  • override_entity: Control which field (version or build number) can be overridden
  • empty_override: Specify behavior when override value is empty
  • version_validation: Validate override version values These fields abstract and generalize the version/build number override logic into the CondaVirtualPackages class, removing the need for individual virtual packages to implement their own override handling. (#15248)
  • Add a new override_virtual_packages (with alias virtual_packages) key to condarc. (#15156 via [#15318])
  • Add .created and .last_modified properties to PrefixData, which provide information about the creation and last modification times of a given environment, respectively. (#14308 via [#15329])
  • Add a new envs_details field to the conda info --json output to inspect properties of the registered environments. This is also part of the conda info --envs --json and conda env list --json outputs. (#15330)
  • conda.plugins.reporter_backends.JSONReporterRenderer.envs_list now allows dict[str, dict[str, str | bool]], which is passed directly to the JSON dumper. (#15330)

Bug fixes

  • Ensure MatchSpec serialization does not contain orphan = separator when the version field is set to *. (#14357 via [#15294])
  • Require conda-libmamba-solver >=25.4.0. (#15289)
  • Fix Channel.urls() to respect explicit subdirs parameter when the channel has a platform defined. (#14258)
  • Include platform in Channel equality and hash checks. (#14259 via [#15296])
  • Fix where conda search --json --use-index-cache <package> could fail to encode message as json, when cache is empty. (#15308)
  • Adjust whitespace in conda info --envs header. (#15330)
  • Fix plugin settings YAML serialization to use valid nested YAML format for plugin settings in conda config --describe output. (#15339 via [#15341])
  • Fix several bugs related to Python 3.14 compatibility. (#15079, [#15088] via [#15340])
  • Ignore and warn user if the PATH environment variable is set in the environment config. Conda should not enable modifying the PATH to any arbitrary value. (#15342)
  • Restrict the JSON output to only the envs list when conda info --envs --json and conda env list --json are called. (#15353)
  • Produce a warning when a user tries to add a PATH environment variable to their environment configuration. Adding reserved env vars like PATH to the environment variables config for an environment may produce unexpected results in conda. (#15292 via [#15354])
  • Fix zsh parse error on Windows. (#13915, [#9922] via [#15335])
  • Remove return from try-finally per PEP-765. (#15370 via [#15371])

Deprecations

  • Mark conda.plugins.hookspec.spec_name as pending deprecation, to be removed in 26.9. Use conda.base.constants.APP_NAME instead. (#15255)
  • Mark conda.cli.main_compare.get_packages as pending deprecation, to be removed in 26.9. Use conda.core.prefix_data.PrefixData.map_records instead. (#15387)

Docs

  • Expand contributor documentation. (#15208)
  • Reference conda.plugins.types.* instead of re-exports from conda.plugins. (#15307)
  • Use --name more consistently in getting started docs. (#15346)

Other

  • Reduce warnings in tests. (#15307)
  • Performance improvements for the conda env list command, which now defers retrieving environment information until necessary. (#15320)
  • Stop using assertions in non-testing code, and enable the corresponding linting rules. (#15357 via [#15361])

Contributors

Source: README.md, updated 2025-11-24