Sourced from rand_chacha's releases.

rand v0.9.1

Changelog

Security and unsafe

• Revise "not a crypto library" policy again (#1565)
• Remove zerocopy dependency from rand (#1579)

Fixes

• Fix feature simd_support for recent nightly rust (#1586)

Changes

• Allow fn rand::seq::index::sample_weighted and fn IndexedRandom::choose_multiple_weighted to return fewer than amount results (#1623), reverting an undocumented change (#1382) to the previous release.

Additions

• Add rand::distr::Alphabetic distribution. (#1587)
• Re-export rand_core (#1604)

New Contributors

• @​yttersian made their first contribution in rust-random/rand#1567
• @​sorairolake made their first contribution in rust-random/rand#1583
• @​1Git2Clone made their first contribution in rust-random/rand#1587
• @​baloo made their first contribution in rust-random/rand#1589
• @​fjarri made their first contribution in rust-random/rand#1593
• @​Raymi306 made their first contribution in rust-random/rand#1616
• @​hashcatHitman made their first contribution in rust-random/rand#1627

Full Changelog: rust-random/rand@0.9.0...0.9.1

Sourced from rand_chacha's changelog.

Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog and this project adheres to Semantic Versioning.

A separate changelog is kept for rand_core.

You may also find the Upgrade Guide useful.

[Unreleased]

Changes

• The dependency on rand_chacha has been replaced with a dependency on chacha20. This changes the implementation behind StdRng, but the output remains the same. There may be some API breakage when using the ChaCha-types directly as these are now the ones in chacha20 instead of rand_chacha (#1642).
• Rename fns IndexedRandom::choose_multiple -> sample, choose_multiple_array -> sample_array, choose_multiple_weighted -> sample_weighted, struct SliceChooseIter -> IndexedSamples and fns IteratorRandom::choose_multiple -> sample, choose_multiple_fill -> sample_fill (#1632)
• Use Edition 2024 and MSRV 1.85 (#1653)
• Let Fill be implemented for element types, not sliceable types (#1652)
• Fix OsError::raw_os_error on UEFI targets by returning Option<usize> (#1665)
• Replace fn TryRngCore::read_adapter(..) -> RngReadAdapter with simpler struct RngReader (#1669)
• Remove fns SeedableRng::from_os_rng, try_from_os_rng (#1674)
• Remove Clone support for StdRng, ReseedingRng (#1677)
• Use postcard instead of bincode to test the serde feature (#1693)
• Avoid excessive allocation in IteratorRandom::sample when amount is much larger than iterator size (#1695)
• Rename os_rng -> sys_rng, OsRng -> SysRng, OsError -> SysError (#1697)
• Rename Rng -> RngExt as upstream rand_core has renamed RngCore -> Rng (#1717)

Additions

• Add fns IndexedRandom::choose_iter, choose_weighted_iter (#1632)
• Pub export Xoshiro128PlusPlus, Xoshiro256PlusPlus prngs (#1649)
• Pub export ChaCha8Rng, ChaCha12Rng, ChaCha20Rng behind chacha feature (#1659)

Removals

• Removed ReseedingRng (#1722)

#1695: rust-random/rand#1695 #1697: rust-random/rand#1697 #1717: rust-random/rand#1717 #1722: rust-random/rand#1722

[0.9.2] - 2025-07-20

Deprecated

• Deprecate rand::rngs::mock module and StepRng generator (#1634)

Additions

• Enable WeightedIndex<usize> (de)serialization (#1646)

[0.9.1] - 2025-04-17

Security and unsafe

• Revise "not a crypto library" policy again (#1565)
• Remove zerocopy dependency from rand (#1579)

... (truncated)

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