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Prefix.dev - the Pixi company
@prefix.dev

Extras (CEP 44) Opt into optional dependency groups, just like PyPI: sqlalchemy[extras=[postgres, sqlite]] No more shipping empty sqlalchemy-postgres / -sqlite shim packages on conda-forge just to pull in the right drivers.

Prefix.dev - the Pixi company
@prefix.dev

Conditional dependencies (CEP 43) Deps that only apply when a condition holds. Ship one noarch package and add e.g.: pywin32[when="__win"] Conditions combine virtual packages, versions and packages with and / or / not.

Prefix.dev - the Pixi company
@prefix.dev

Flags (CEP 45) Select build variants by named tag instead of glob-matching the build string: pytorch[flags=[gpu, blas:*]] Build with rattler-build --v3; Pixi turns v3 on automatically when it sees the new fields. Feedback welcome while it's in beta 🙏