conda-build has been the de facto tool to build conda packages since the inception of the conda ecosystem.
Its user experience has suffered from design issues in the recipe format and years of accumulated technical debt.
Recent work on conda-build aims to improve that experience: it now supports v1 recipes, powered by the newly available Python bindings for the rattler-build crates.
conda and conda-build 26.9.0 are out. Since our June and July update, conda-pypi, constructor, rattler, grayskull, and several other projects have shipped releases too.
The June and July 2026 releases included updates to conda, conda-build, conda-libmamba-solver, conda-pypi, constructor, menuinst, rattler, and more! 🎉 All of these have been released to both defaults and conda-forge channels.
The May 2026 releases span conda, conda-build, conda-libmamba-solver, conda-pypi, and conda-rattler-solver! 🎉 You'll find them on the main and conda-forge channels.
For conda, lockfiles are a first-class workflow now, the CLI is lighter on everyday commands, and there is more under the hood for channel metadata and future dependency specs. Step-by-step opt-in for beta previews—Rattler and conda-pypi—is on New features to try.
The March 2026 releases included updates to conda, conda-build, conda-libmamba-solver, conda-content-trust, conda-rattler-solver, conda-standalone, constructor, and conda-pypi! 🎉 All of these have been released to both defaults and conda-forge channels.
The January 2026 releases included updates to conda, conda-build, and conda-pack! 🎉 All of these have been released to both defaults and conda-forge channels.
The November 2025 releases included updates to conda, conda-build, and conda-libmamba-solver! 🎉 All of these have been released to both defaults and conda-forge channels.
The September 2025 releases included updates to conda and conda-build! 🎉 Both have been released to defaults and conda-forge channels.
The July 2025 releases included updates to conda, conda-build, constructor, and menuinst! 🎉 All of these have been released to both defaults and conda-forge channels.
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.