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Releases: conda/conda

24.5.0

09 May 18:34
@kenodegard kenodegard
24.5.0
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Enhancements

  • Report which MatchSpec item caused Invalid*Spec exceptions for more informative error messages. (#11203 via #13598)
  • MSYS2 packages can now use the upstream installation prefixes. (#13649)
  • Add support for CEP-15 base_url field in repodata.json. (#13137 via #13744)
  • In custom channel settings, allow specification of channel URLs using a glob-like wildcard pattern, e.g. for user with auth handler plugins. (#13778 via #13779)

Bug fixes

  • Fix conda notices --json to correctly output JSON. (#13561)
  • Fix prefix replacement for Windows subdir on Unix. (#13689)

Deprecations

  • Mark conda.plan._get_best_prec_match as pending deprecation. Use conda.misc._get_best_prec_match instead. (#12421)
  • Mark conda.plan._handle_menuinst as pending deprecation. (#12421)
  • Mark conda.plan._inject_UNLINKLINKTRANSACTION as pending deprecation. (#12421)
  • Mark conda.plan._plan_from_actions as pending deprecation. (#12421)
  • Mark conda.plan.add_defaults_to_specs as pending deprecation. (#12421)
  • Mark conda.plan.add_unlink as pending deprecation. (#12421)
  • Mark conda.plan.display_actions as pending deprecation. (#12421)
  • Mark conda.plan.execute_actions as pending deprecation. (#12421)
  • Mark conda.plan.get_blank_actions as pending deprecation. (#12421)
  • Mark conda.plan.install_actions as pending deprecation. (#12421)
  • Mark conda.plan.print_dists as pending deprecation. (#12421)
  • Mark conda.plan.revert_actions as pending deprecation. Use conda.cli.install.revert_actions instead. (#12421)
  • Mark conda.plan as an entrypoint as pending deprecation. (#12421)
  • Mark conda.activate._Activator.add_export_unset_vars as pending deprecation. Use conda.activate._Activator.get_export_unset_vars instead. (#13720)
  • Mark conda.activate._Activator.get_scripts_export_unset_vars as pending deprecation. Use get_scripts_export_unset_vars helper function in test_activate.py instead. (#13720)
  • Mark conda.activate._Activator._get_path_dirs(extra_library_bin) as pending deprecation. (#13720)
  • Mark conda.activate.JSONFormatMixin.get_scripts_export_unset_vars as pending deprecation. Use conda.activate._Activator.get_export_unset_vars instead. (#13720)
  • Mark conda.gateways.logging.trace as pending deprecation. Use Logger.log(conda.common.constants.TRACE, msg) instead. (#13732)
  • Mark conda create --mkdir as pending deprecation. The argument is redundant and unnecessary. (#13751)
  • Mark conda install --mkdir as pending deprecation. Use conda create instead. (#13751)
  • Mark conda._vendor.frozendict as pending deprecation. Use frozendict instead. (#13767 via #13766)
  • Mark conda.auxlib.collection.make_immutable as pending deprecation. Use frozendict.deepfreeze instead. (#13801)
  • Mark conda.plan.execute_plan as pending deprecation. (#13869)
  • Mark conda.plan.execute_instructions as pending deprecation. (#13869)
  • Mark conda.plan._update_old_plan as pending deprecation. (#13869)

Docs

  • Add type hints and doc strings to conda.core.index. (#13816)

Other

  • Remove setuptools remainings (MANIFEST.in, wheel build dependency) not required since the move to hatch in #12509. (#13684)
  • Remove and update any imports inside conda that is importing from conda/exports.py. (#13869)

Contributors

Full Changelog: 24.4.0...24.5.0

Contributors

jezdez, travishathaway, and 14 other contributors
Assets 4

24.4.0

26 Apr 15:48
@jezdez jezdez
24.4.0
9117ad7
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jezdez Jannis Leidel
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24.4.0

Enhancements

  • For Windows users, the stub executables used for Python entrypoints in packages are now codesigned. (#13721)

Contributors

Full Changelog: 24.3.0...24.4.0

Contributors

jezdez, dholth, and Callek
Assets 4

24.3.0

18 Mar 13:27
@jezdez jezdez
24.3.0
f54cc82
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24.3.0

Enhancements

  • Show first few characters of undecodeable response if repodata.json raises
    JSONDecodeError. (#11804)
  • Update conda.gateways.subprocess.subprocess_call to use text=True to avoid manual encoding/decoding. (#13240)
  • Add a new plugin hook giving plugin authors the ability to define new settings. (#13554)
  • Optimize module imports to speed up conda activate. (#13567 via #13568)
  • Move conda env export to conda export and alias the old command to the new command. (#13577)
  • Report progress while running conda install --revision <idx>. (#13611)
  • Add conda.testing.tmp_channel pytest fixture to create a temporary local channel for testing. (#13634)

Bug fixes

  • Print traceback on KeyboardInterrupt instead of raising another AttributeError exception, when conda debugging logs are enabled. (#13531)
  • Parse integer channel notice IDs as str instead of raising an exception. (#13543)
  • Add direct runtime dependency on zstandard for use when downloading repodata.json.zst. (#13551)
  • Fallback to repodata.json if repodata.json.zst cannot be decompressed as zstandard. (#13558)
  • conda rename command no longer throws an error when conda is not active. (#13565)
  • Fallback to repodata.json from repodata.json.zst on most 4xx error codes. (#13573)
  • Fix excess resource usage by log handling when fetching repodata. (#13541 via #13628)
  • Re-enable --subdir and --platform flags to be available for conda env create command. (#13632)
  • Fix __archspec virtual package on Windows to return microarchitecture instead of the default x86_64. (#13641)
  • Check Content-Length is nonzero before calculating progress, avoiding a possible ZeroDivisionError. (#13653, #13671)

Deprecations

  • Discontinue custom docker images. Use images provided by Anaconda Inc. or conda-forge instead. (#13162)
  • Mark conda.common.compat.encode_arguments as pending deprecation. (#13240)
  • Remove conda.export.handle_proxy_407. (#13629)
  • Mark conda.testing.integration.make_temp_channel as pending deprecation. Use conda.testing.tmp_channel fixture instead. (#13634)
  • Mark conda.testing.integration.running_a_python_capable_of_unicode_subprocessing as pending deprecation. (#13634)
  • Mark conda.testing.integration.set_tmpdir as pending deprecation. Use tmp_path, conda.testing.path_factory, or conda.testing.tmp_env instead. (#13634)
  • Mark conda.testing.integration._get_temp_prefix as pending deprecation. Use tmp_path, conda.testing.path_factory, or conda.testing.tmp_env instead. (#13634)
  • Mark conda.testing.integration.make_temp_prefix as pending deprecation. Use tmp_path, conda.testing.path_factory, or conda.testing.tmp_env instead. (#13634)
  • Mark conda.testing.integration.FORCE_temp_prefix as pending deprecation. Use tmp_path, conda.testing.path_factory, or conda.testing.tmp_env instead. (#13634)
  • Mark conda.testing.integration.create_temp_location as pending deprecation. Use tmp_path or conda.testing.path_factory instead. (#13634)
  • Mark conda.testing.integration.tempdir as pending deprecation. Use tmp_path or conda.testing.path_factory instead. (#13634)
  • Mark conda.testing.integration.reload_config as pending deprecation. Use conda.base.context.reset_context instead. (#13634)
  • Postpone conda.base.context.Context.conda_exe deprecation to conda 24.9. (#13634)
  • Postpone conda.testing.integration.run_command deprecation to conda 25.3. (#13634)
  • Postpone loading subcommands from executables deprecation to conda 25.3. (#13634)
  • Remove vendored conda._vendor.boltons. Use boltons package instead. (#12681 via #13634)
  • Remove conda.auxlib.packaging. Use a modern build system instead; see https://packaging.python.org/en/latest/tutorials/packaging-projects#creating-pyproject-toml for more details. (#12681 via #13634)
  • Remove conda env create --force. Use conda env create --yes instead. (#12681 via #13634)
  • Remove conda info PACKAGE. Use conda search PACKAGE --info instead. (#12681 via #13634)
  • Remove conda.core.subdir_data.fetch_repodata_remote_request. Use conda.core.subdir_data.SubdirData.repo_fetch.fetch_latest_parsed instead." (#12681 via #13634)
  • Remove conda.exports.memoized. Use functools.lru_cache instead. (#12681 via #13634)
  • Remove conda.gateways.disk.read._digest_path. Use conda.gateways.disk.read.compute_sum instead. (#12681 via #13634)
  • Remove conda.gateways.disk.read.compute_md5sum. Use conda.gateways.disk.read.compute_sum(path, "md5") instead. (#12681 via #13634)
  • Remove conda.gateways.disk.read.compute_sha256sum. Use conda.gateways.disk.read.compute_sum(path, "sha256") instead. (#12681 via #13634)
  • Remove conda.instructions.PREFIX. (#12681 via #13634)
  • Remove conda.instructions.PREFIX_CMD. (#12681 via #13634)
  • Remove conda.testing.encode_for_env_var. (#12681 via #13634)
  • Remove conda.testing.conda_check_versions_aligned. (#12681 via #13634)
  • Remove conda.testing.helpers.run_inprocess_conda_command. Use conda.testing.tmp_env instead. (#12681 via #13634)
  • Remove conda.testing.helpers.capture_json_with_argv. (#12681 via #13634)
  • Remove conda.testing.integration.get_conda_list_tuple. Use conda.core.prefix_data.PrefixData.get instead. (#12681 via #13634)
  • Remove conda.utils.md5_file. Use conda.gateways.disk.read.compute_sum(path, "md5") instead. (#12681 via #13634)
  • Remove conda.utils.hashsum_file. Use conda.gateways.disk.read.compute_sum instead. (#12681 via #13634)
  • Remove conda.utils.safe_open. Use open instead. (#12681 via #13634)
  • Remove python -m conda_env. Use conda env or python -m conda env instead. (#12681 via #13634)
  • Remove conda_env.env.load_from_directory. (#12681 via #13634)
  • Remove conda_env.pip_util.get_pip_version. (#12681 via #13634)
  • Remove conda_env.pip_util.PipPackage. (#12681 via #13634)
  • Remove conda_env.pip_util.installed. (#12681 via #13634)
  • Remove conda_env.pip_util._canonicalize_name. (#12681 via #13634)
  • Remove conda_env.pip_util.add_pip_installed. (#12681 via #13634)

Docs

  • Update the navigation links for Miniconda. (#13572)

Other

  • Remove dev/* scripts in favor of conda-incubator/setup-miniconda GitHub Action in .github/workflows/tests.yml. (#13162)
  • Stop chaining commands for steps in .github/workflows/tests.yml. (#12418 via #13162)
  • Modernize tests. (#13547, #13292)
  • Run GitHub tests workflow also on osx-arm64 (aka Apple Silicon) runners. Enable osx-arm64 canary builds. Fix or disable broken tests. (#13617)
  • Upload stable release artifacts to GitHub releases during releases. (#13399)

Contributors

Full Changelog: 24.1.2...24.3.0

Contributors

jezdez, dholth, and 13 other contributors
Assets 4

24.1.2

19 Feb 13:57
@kenodegard kenodegard
24.1.2
69131a4
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24.1.2

Bug fixes

  • Fix deprecated fetch_repodata_remote_request when repodata_use_zst is enabled. (#13595)

Contributors

Full Changelog: 24.1.1...24.1.2

Contributors

dholth
Assets 2

24.1.1

13 Feb 15:00
@kenodegard kenodegard
24.1.1
c2b5c5f
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24.1.1

Bug fixes

  • Fallback to repodata.json if repodata.json.zst cannot be decompressed as zstandard. (#13558)
  • Fallback to repodata.json from repodata.json.zst on most 4xx error codes. (#13573)

Contributors

Full Changelog: 24.1.0...24.1.1

Contributors

dholth
Assets 2

24.1.0

31 Jan 19:22
@jezdez jezdez
24.1.0
595de2b
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24.1.0

Special announcement

♻️ The conda_env.* modules have been merged into the conda package!

To improve the integration of the conda env subcommand (previously standalone), we've moved its code into the conda package, while allowing old conda env commands to still work via Python import redirects. This is a first step of many to improving the user experience of the conda command line interface related to environment management. (#13168)

Enhancements

  • Verify signatures on to-be-installed packages instead of on all packages. (#11545, #13053)
  • Add new pre-solves and post-solves plugin hooks. (#13053)
  • Add support for Python 3.12. (#13072)
  • Check repodata.json.zst for faster repodata downloads. (#13256)
  • Add --skip-flexible-search option in conda search to skip flexible search. (#13315)
  • Provide a more useful warning when attempting to rename a non-existent prefix. (#13387)
  • Add a new flag --keep-env to be used with conda remove --all. It allows users to delete all packages in the environment while retaining the environment itself. (#13419)
  • Add a Y/N prompt warning users that conda env remove and conda remove --all deletes not only the conda packages but the entirety of the specified environment. (#13440)
  • Add --repodata-use-zst/--no-repodata-use-zst flag to control repodata.json.zst check; corresponding repodata_use_zst: true/false for .condarc. Default is to check for repodata.json.zst. Disable if remote returns unparseable repodata.json.zst instead of correct data or 404. (#13504)

Bug fixes

  • Create the ~/.conda directory before trying to write to the environments.txt file. (#13338)
  • Ensure PackageRecord.timestamp is dumped in milliseconds. (#13483)
  • Fix error when setting a non-default repodata filename via CONDA_REPODATA_FNS. (#13490)
  • Fix the config file location where the integrated Anaconda client gateway loads user configuration from. This is a regression introduced in conda 23.11.0 when the platformdirs library was adopted. (#13517 via #13520)
  • Interpret missing Cache-Control header as max-age=0 instead of exception. (#13522)

Deprecations

  • Mark conda_env/cli/common as pending deprecation. Use conda.cli.common instead. (#13168)
  • Mark conda_env/cli/main_config as pending deprecation. Use conda.cli.main_env_config instead. (#13168)
  • Mark conda_env/cli/main_create as pending deprecation. Use conda.cli.main_env_create instead. (#13168)
  • Mark conda_env/cli/main_export as pending deprecation. Use conda.cli.main_env_export instead. (#13168)
  • Mark conda_env/cli/main_list as pending deprecation. Use conda.cli.main_env_list instead. (#13168)
  • Mark conda_env/cli/main_remove as pending deprecation. Use conda.cli.main_env_remove instead. (#13168)
  • Mark conda_env/cli/main_update as pending deprecation. Use conda.cli.main_env_update instead. (#13168)
  • Mark conda_env/cli/main_vars as pending deprecation. Use conda.cli.main_env_vars instead. (#13168)
  • Mark conda_env/env as pending deprecation. Use conda.env.env instead. (#13168)
  • Mark conda_env/installers/base as pending deprecation. Use conda.env.installers.base instead. (#13168)
  • Mark conda_env/installers/conda as pending deprecation. Use conda.env.installers.conda instead. (#13168)
  • Mark conda_env/installers/pip as pending deprecation. Use conda.env.installers.pip instead. (#13168)
  • Mark conda_env/pip_util as pending deprecation. Use conda.env.pip_util instead. (#13168)
  • Mark conda_env/specs as pending deprecation. Use conda.env.specs instead. (#13168)
  • Mark conda_env/specs/binstar as pending deprecation. Use conda.env.specs.binstar instead. (#13168)
  • Mark conda_env/specs/requirements as pending deprecation. Use conda.env.specs.requirements instead. (#13168)
  • Mark conda_env/specs/yaml_file as pending deprecation. Use conda.env.specs.yaml_file instead. (#13168)
  • Mark conda.testing.integration.make_temp_package_cache as pending deprecation. (#13511)

Docs

  • Update Getting Started documentation in User Guide. (#13190)
  • Add GoatCounter (https://www.goatcounter.com/) as an analytics tool. (#13384)
  • Add type hints and doc strings to conda.cli.main_info. (#13445)
  • Add type hints and doc strings to conda.cli.main_search. (#13465)

Other

  • Add type hinting for VersionOrder class. (#13380)
  • Re-enable and apply pyupgrade via ruff. (#13272, #13433)
  • Start tracking performance in continuous integration and automatically report about it in pull requests. (#13460)
  • Add tmp_pkgs_dir fixture to replace make_temp_package_cache. (#13511)
  • Improve lock API for the repodata cache. (#13455)

Contributors

Full Changelog: 23.11.0...24.1.0

Contributors

jezdez, dholth, and 14 other contributors
Assets 2

23.11.0

01 Dec 04:46
@kenodegard kenodegard
23.11.0
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23.11.0

Special announcement

New menuinst v2 support!

conda has supported Start menu items on Windows for a long time. This is what allows users to open up their Miniconda prompt on CMD (Command Prompt) with an initialized conda session. This menu item (or shortcut) creation logic is provided by the menuinst package.

With the release of 23.11.0, conda now supports menuinst v2, which enables the same experience across Windows, Linux, and macOS. This means package builders will be able to provide desktop icons across all operating systems, which can be especially useful for GUI applications. See the documentation for more details.

If you don't want conda to create shortcuts, you can disable it via:

  • shortcuts: false entry in your .condarc configuration
  • CONDA_SHORTCUTS=false environment variable
  • --no-shortcuts command-line flag

Enhancements

  • Add support for menuinst v2, enabling shortcuts across all platforms (Windows, Linux, macOS) using a new JSON schema (see CEP-11). Retain support for old v1-style JSON menus. (#11882)
  • Stop using vendored chardet package by requests/pip; explicitly depend on charset_normalizer. (#13171)
  • Introduce a new plugin hook, CondaHealthCheck, as part of conda doctor. (#13186)
  • Include activate and deactivate in the --help command list. (#13191)
  • Prioritize download of larger packages to prevent smaller ones from waiting. (#13248)
  • Display the used solver in conda info output for debugging purposes. (#13265)
  • Add __conda virtual package. (#13266)
  • Switch from appdirs to platformdirs. (#13306)
  • Implement resume capability for interrupted package downloads. (#8695)

Bug fixes

  • Log expected JLAP range-request errors at info level, occurring when the remote file has rolled over. (#12913)
  • Fix a bug causing an error when options like --debug are used without specifying a command. (#13232)
  • Improve CTRL-C (cancellation) handling for parallel download threads. (#13234)
  • Allow overriding of CONDA_FETCH_THREADS/fetch_threads to set parallel package downloads beyond the default 5. (#13263)
  • Require requests >=2.28 for enhanced response.json() exception handling. (#13346)
  • Apply callback=reset_context in conda.plan to resolve conda-build + conda-libmamba-solver incompatibilities. (conda-libmamba-solver#393 and conda-libmamba-solver#386 via #13357)

Deprecations

  • Deprecate conda.plugins.subcommands.doctor.health_checks.display_health_checks function. (#13186)
  • Deprecate conda.plugins.subcommands.doctor.health_checks.display_report_heading function. (#13186)
  • Remove ruamel_yaml fallback; use ruamel.yaml exclusively. (#13218)
  • Deprecate conda.gateways.anaconda_client.EnvAppDirs in favor of platformdirs. (#13306)
  • Mark conda._vendor.cpuinfo for pending deprecation. (#13313)
  • Deprecate conda._vendor.distro in favor of the distro package. (#13317)

Docs

  • Add the conda-sphinx-theme to the conda documentation. (#13298)
  • Update specific pages to remove redundant TOC entries. (#13298)
  • Include instructions on updating conda in the main README.md. (#13343)

Other

  • Add a lighter weight s3 test; update embedded test package index. (#13085)
  • Refactor code to use lazy imports for all relative imports in conda.cli.main_*, and separate argparse configuration functions from conda.cli.conda_argparse to their respective conda.cli.main_* modules. (#13173)
  • Move custom argparse.Actions to conda.cli.actions (e.g., NullCountAction), and relocate helper argparse functions to conda.cli.helpers (e.g., add_parser_prefix). (#13173)
  • Update upper bound for ruamel.yaml to <0.19 following the release of 0.18. (#13258)
  • Replace black with ruff format in pre-commit. (#13272)

Contributors

Full Changelog: 23.10.0...23.11.0

Contributors

jezdez, 13rac1, and 16 other contributors
Assets 2

23.10.0

30 Oct 16:37
@jezdez jezdez
23.10.0
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23.10.0

✨ Special announcement ✨

With this 23.10.0 release we are changing the default solver of conda to conda-libmamba-solver! 🥳 🚀

The previously "classic" solver is based on pycosat/Picosat and will remain part of conda for the foreseeable future, a fallback is possible and available.

Why are we switching the solver?

In short: to make conda faster and more accurate.

A "solver" is the core component of most package managers; it calculates which dependencies (and which version of those dependencies) to install when a user requests to install a package from a package repository. To address growth-related challenges within the conda ecosystem, the conda maintainers, alongside partners Anaconda, Quansight and QuantStack, introduced a new conda dependency solver based on the Mamba project in December 2022.

Since July 2023, the conda-libmamba-solver plugin has been included in all major conda ecosystem installers (miniforge, miniconda, mambaforge and Anaconda Distribution), but was disabled by default. As soon as these installers are updated to contain conda 23.10.0 or later, they will automatically default to using the conda-libmamba-solver plugin.

What can I do if this update doesn't work for me?

If the new solver is not working as you expect:

  • Check if the behavior you are observing is a known issue or a deliberate change.
  • If that's not the case, please consider submitting a bug report or feature request in the conda-libmamba-solver repository.
  • If necessary, you can go back to using the classic solver without modifying your conda installation:
    • When possible, pass the command line option --solver=classic to your conda calls.
    • Otherwise (e.g. for conda build ... or constructor ...), set the environment variable CONDA_SOLVER=classic.
    • For permanent changes, use the conda configuration system: conda config --set solver classic.

Where can I learn more about conda-libmamba-solver?

The documentation of the conda-libmamba-solver plugin can be found on conda.github.io/conda-libmamba-solver.

For more information about the conda-libmamba-solver rollout plan, please also see our blog post from earlier this year.

Changelog

Enhancements

  • Provide --platform and --subdir flags to create environments for non-native platforms, remembering that choice in future operations. (#11505 via #11794)
  • IMPORTANT: Set solver: libmamba as the new default solver. (#12984)

Bug fixes

  • Check name of symlink, not its target against valid configuration file names (condarc, .condarc, or *.yml/yaml). (#12956)
  • Have conda doctor ignore blank lines in ~/.conda/environments.txt. (#12984)

Deprecations

  • Mark conda.cli.main.generate_parser as pending deprecation. Use conda.cli.conda_argparse.generate_parser instead. (#13144)
  • Mark conda.auxlib.collection.firstitem as pending deprecation. (#13144)
  • Mark conda.auxlib.collection.call_each as pending deprecation. (#13144)
  • Mark conda.auxlib.compat.NoneType as pending deprecation. (#13144)
  • Mark conda.auxlib.compat.primative_types as pending deprecation. (#13144)
  • Mark conda.auxlib.compat.utf8_writer as pending deprecation. (#13144)
  • Mark conda.auxlib.exceptions.AuthenticationError as pending deprecation. (#13144)
  • Mark conda.auxlib.exceptions.NotFoundError as pending deprecation. (#13144)
  • Mark conda.auxlib.exceptions.InitializationError as pending deprecation. (#13144)
  • Mark conda.auxlib.exceptions.SenderError as pending deprecation. (#13144)
  • Mark conda.auxlib.exceptions.AssignmentError as pending deprecation. (#13144)
  • Mark conda.auxlib.type_coercion.boolify_truthy_string_ok as pending deprecation. (#13144)
  • Mark conda.auxlib.type_coercion.listify as pending deprecation. (#13144)
  • Mark conda.models.dist.IndexRecord as pending deprecation for removal in 24.9. (#13193)
  • Mark conda.exports.fetch_index as pending deprecation for removal in 24.9. Use conda.core.index.fetch_index instead. (#13194)

Other

  • Constrain minimum conda-build version to >=3.27. (#13177)

Contributors

Contributors

jezdez, dholth, and 5 other contributors
Assets 2

23.9.0

27 Sep 19:49
@jezdez jezdez
23.9.0
cfd33ed
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23.9.0

Special announcement

This is an announcement about an important and positive future change in conda's functionality:

  • We will change the default solver of conda to conda-libmamba-solver in a special 23.10.0 release in the near future!

  • You can already benefit from it today by configuring your conda installation to use it (e.g. by running conda config --set solver libmamba).

  • The current "classic" solver is based on pycosat/Picosat and will remain part of conda for the forseeable future, a fallback is possible and available (see below).

Plan to change the default solver

Here is our updated plan to change the default solver, to better follow CEP 8 and reduce the potential impact on conda users:

  • The upcoming, special 23.10.0 release will be dedicated to the switch of the default solver to libmamba.
  • Users will be able to opt out of the libmamba solver and use the classic solver instead, by using one of these options:
    • the --solver=classic command line option,
    • the CONDA_SOLVER=classic environment variable or
    • running conda config --set solver classic.
  • All development of conda-libmamba-solver plugin happens in the conda-libmamba-solver repo, including issue tracking.
  • The documentation of the conda-libmamba-solver plugin can be found on conda.github.io/conda-libmamba-solver.

For more information about the conda-libmamba-solver rollout plan, please also see our blog post from earlier this year.

Context

A "solver" is the core component of most package managers; it calculates which dependencies (and which version of those dependencies) to install when a user requests to install a package from a package repository. To address growth-related challenges within the conda ecosystem, the conda maintainers, alongside partners Anaconda, Quansight and QuantStack, introduced a new conda dependency solver based on the Mamba project in December 2022.

Since July 2023, that conda-libmamba-solver plugin has been included in and automatically installed with all major conda ecosystem installers (miniforge, miniconda, mambaforge and Anaconda Distribution), with the default solver configuration unchanged.

Enhancements

  • Improve speed of fish shell initialization. (#12811)
  • Directly suppress use of binstar (conda) token when fetching trust metadata. (#12889)
  • Add a new "auth handler" plugin hook for conda. (#12911)
  • Lock index cache metadata by default. Added --no-lock option in case of problems, should not be necessary. Older --experimental=lock no longer has an effect. (#12920)
  • Add context.register_envs option to control whether to register environments in ~/.conda/environments.txt when they are created. Defaults to true. (#12924)
  • Inject a new detailed output verbosity level (i.e., the old debug level -vv is now -vvv). (#12985, #12977, #12420, #13036)
  • Add support for truststore to the ssl_verify config option, enabling conda to use the operating system certificate store (requires Python 3.10 or later). (#13075 and #13149)
  • Add emscripten-wasm32 and wasi-wasm32 platforms to known platforms. (#13095)
  • Adds the py.typed marker file to the conda package for compliance with PEP-561. (#13107)
  • Import boto3 only when S3 channels are used, saving startup time. (#12914)

Bug fixes

  • When using pip dependencies with conda env create, check the directory permissions before writing to disk. (#11610)
  • Hide InsecureRequestWarning for JLAP when CONDA_SSL_VERIFY=false, matching non-JLAP behavior. (#12731)
  • Disallow ability to create a conda environment with a colon in the prefix. (#13044)
  • Fix AttributeError logging response with nonexistent request when using JLAP with file:/// URIs. (#12966)
  • Do not show progress bars in non-interactive runs for cleaner logs. (#12982)
  • Fix S3 bucket name. (#12989)
  • Default --json and --debug to NULL so as to not override CONDA_JSON and CONDA_DEBUG environment variables. (#12987)
  • XonshActivator now uses source-bash in non-interactive mode to avoid side-effects from interactively loaded RC files. (#13012)
  • Fix conda remove --all --json output. (#13019)
  • Update test data to stop triggering security scanners' false-positives. (#13034)
  • Fix performance regression of basic commands (e.g., conda info) on WSL. (#13035)
  • Configure conda to ignore "Retry-After" header to avoid the scenarios when this value is very large and causes conda to hang indefinitely. (#13050)
  • Treat JSONDecodeError on repodata.info.json as a warning, equivalent to a missing repodata.info.json. (#13056)
  • Fix sorting error for conda config --show-sources --json. (#13076)
  • Catch OSError in find_commands to account for incorrect PATH entries on Windows. (#13125)
  • Catch a NotWritableError when trying to find the first writable package cache dir. (#9609)
  • conda env update --prune uses only the specs coming from environment.yml file and ignores the history specs. (#9614)

Deprecations

  • Removed conda.another_unicode(). (#12948)
  • Removed conda._vendor.toolz. (#12948, #13141)
  • Removed conda._vendor.tqdm. (#12948)
  • Removed conda.auxlib.decorators.memoized decorator. (#12948)
  • Removed conda.base.context.Context.experimental_solver. (#12948)
  • Removed conda.base.context.Context.conda_private. (#12948)
  • Removed conda.base.context.Context.cuda_version. (#12948)
  • Removed conda.base.context.get_prefix(). (#12948)
  • Removed conda.cli.common.ensure_name_or_prefix(). (#12948)
  • Removed --experimental-solver command line option. (#12948)
  • Removed conda.common.cuda module. (#12948)
  • Removed conda.common.path.explode_directories(already_split). (#12948)
  • Removed conda.common.url.escape_channel_url(). (#12948)
  • Removed conda.core.index.check_whitelist(). (#12948)
  • Removed conda.core.solve._get_solver_class(). (#12948)
  • Removed conda.core.subdir_data.read_mod_and_etag(). (#12948)
  • Removed conda.gateways.repodata.RepodataState.load(). (#12948)
  • Removed conda.gateways.repodata.RepodataState.save(). (#12948)
  • Removed conda.lock module. (#12948)
  • Removed conda_env.cli.common.stdout_json(). (#12948)
  • Removed conda_env.cli.common.get_prefix(). (#12948)
  • Removed conda_env.cli.common.find_prefix_name(). (#12948)
  • Remove import of deprecated cgi module by deprecating ftp STOR support. (#13013)
  • Require boto3 for S3 support and drop support for the older boto as it doesn't support our minimum required version of Python. (#13112)
  • Reduce startup delay from deprecations module by using sys._getframe() instead of inspect.stack(). (#12919)

Other

  • Use Ruff linter in pre-commit configuration (#12279)
  • Remove unused cache_path arguments from RepoInterface/JlapRepoInterface; replaced by cache object. (#12927)

Contributors

Full Changelog: 23.7.4...23.9.0

Contributors

jezdez, zeehio, and 21 other contributors
Assets 2

23.7.4

12 Sep 12:33
@beeankha beeankha
23.7.4
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23.7.4

Enhancements

  • Use os.scandir() to find conda subcommands without stat() overhead. (#13033, #13067)

Bug fixes

  • Fix S3 bucket name in test suite. (#12989)
  • Fix performance regression of basic commands (e.g., conda info) on WSL. (#13035)
  • Catch PermissionError raised by conda.cli.find_commands.find_commands when user's $PATH contains restricted paths. (#13062, #13089)
  • Fix sorting error for conda config --show-sources --json. (#13076)

Contributors

Contributors

dholth, kenodegard, and 2 other contributors
Assets 2