25.4.0

Enhancements

• Use conda.reporters.get_spinner() to support conda reporter plugins. (#641)

Bug fixes

• Always percent-encode spaces in file:// channel URLs. (#640)
• Fix a bug where auto-selection of GPU variants of pytorch and torchvision didn't work as expected. (#646 via #647)
• Avoid libmamba MatchSpec parsing errors by skipping nameless channel information in passed specs. (#645 via #648)

Contributors

• @jaimergp

25.3.0

Bug fixes

• Fix issue with content trust post-solve hooks that prevented signatures from being verified when the solved package records didn't include subdir information in their channel metadata. (#616 via #617)
• Protect against conda.base.context.context.restore_free_channel deprecation by using getattr. (#629)
• Remove all packages with --no-deps, not just the last one to be analyzed. (#632)

Docs

• Mention conda ecosystem's adaptation of libsolv. (#624)

Contributors

• @jaimergp
• @jjerphan
• @kenodegard

25.1.1

Bug fixes

• Consider whether the full spec matches anything installed (not just name) when --satisfied-skip-solve is in use. (#605 via #606)

Contributors

• @jaimergp

25.1.0

Bug fixes

• Fix dependency handling in conda env update --prune. (#595 via #596)
• Accept both pathlib.Path() and str for LibMambaSolver() prefix. (#586)

Contributors

• @dholth
• @jaimergp

24.11.1

Bug fixes

• Ensure PackageRecord URLs are percent-decoded before passing them back to conda. (#583)

Contributors

• @jaimergp

24.11.0

🚀 This release ships compatibility for libmamba 2.x. It's a major rewrite! Make sure to check the changelog entry for 24.11.0rc for more details.

Bug fixes

• Load SOLV repodata cache in offline mode too. (#570)

Contributors

• @jaimergp

24.11.0rc

Enhancements

• Require libmambapy v2. This is a big refactor in libmamba internals, which also allowed us to remove a lot of code in conda-libmamba-solver. (#457)

Deprecations

• CONDA_LIBMAMBA_SOLVER_NO_CHANNELS_FROM_INSTALLED has no effect anymore. Channels coming from installed packages are no longer added to the channel list. (#411 via #457)
• Removed conda_libmamba_solver.state.BaseIndexHelper. The base class is now conda_libmamba_solver.index.IndexHelper. (#457)
• Verbose logging in libsolv has a big overhead in libmamba v2, so we have disabled it by default (even if the user adds -vvv flags to the CLI). To opt-in, please set CONDA_LIBMAMBA_SOLVER_DEBUG_LIBSOLV to a truthy value. (#457)
• Python 3.8 is no longer supported. The minimum version is now 3.9. (#457)

Contributors

• @jaimergp

24.9.0

Bug fixes

• Use Solver instance configuration to initialize the libmamba context without implicitly relying on the conda context settings. (#525)
• Fix conda-build compatibility regression where arch-specific outputs can't be found in the test phase if a noarch output was built first. (#531)

Docs

• Add installation workarounds FAQ with conda-standalone. (#505 via #511)
• Update user guide to reflect conda-libmamba-solver being the default solver in conda. (#516 via #517)
• Include mamba-org/mamba as a required cloned repository for setting up a dev environment. (#528)

Contributors

• @jaimergp
• @jjhelmus made their first contribution in #528
• @justmarkham made their first contribution in #510

24.7.0

Bug fixes

• Allow wildcards in package names for conda remove (e.g. conda remove "python-*"). (#434 via #435)
• Avoid duplicate channel listing when using channel-pinned specs like channel::package. (#449)
• Fix a performance regression where .solv repodata cache files were not being loaded when available. (#481 via #482)
• Do not ignore virtual packages as input specs. (#480 via #485)
• Pin libmambapy <2 to defend against upcoming API changes. (#492)

Docs

• Document development workflows with devcontainers. (#451)

Other

• Add DevContainer configurations for local development workflows. (#451)

Contributors

• @jaimergp
• @tl-hbk made their first contribution in #449
• @zklaus made their first contribution in #476

Full Changelog: 24.1.0...24.7.0

24.1.0

Enhancements

• Prioritize explicitly requested specs with stricter constraints over implicit ones or name-only specs (e.g. a CLI-specified name=version=build will be sent to the solver before CLI-specified name=version and name). This happens to fix #391. (#381)
• Load pkgs_dirs records when called in offline mode. (#396 via #423)

Bug fixes

• Fix a regression introduced in #378, where certain solves would hard crash due to the given specs input order. (#391 via #381)
• Properly propagate customized local channels (conda-build workspaces). Requires libmamba 1.5.6 or above. (#398 via #401)
• Do not raise an error if an unsupported MatchSpec field can be safely dropped instead. Currently ignoring url, md5 and sha256. (#418 via #421, #427 via #429).
• Do not crash if a stateless repodata cache is accessed with --offline or --use-index-cache. (#396 via #423).

Other

• Remove old SolverOutputState.specs preparation logic from state.py, which was no longer in use since 23.9.0. Instead, enumerate all known specs in a certain order (see Enhancements for details). This list is then consumed by Solver._specs_to_tasks() as usual. (#381)

Contributors

• @isuruf made their first contribution in #401
• @jaimergp