Sourced from rand's changelog.

[0.10.0] - 2026-02-08

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)
• Fn rand::make_rng() -> R where R: SeedableRng (#1734)

Removals

• Removed ReseedingRng (#1722)
• Removed unused feature "nightly" (#1732)
• Removed feature small_rng (#1732)

#1632: rust-random/rand#1632 #1642: rust-random/rand#1642 #1649: rust-random/rand#1649 #1652: rust-random/rand#1652 #1653: rust-random/rand#1653 #1659: rust-random/rand#1659 #1665: rust-random/rand#1665 #1669: rust-random/rand#1669 #1674: rust-random/rand#1674 #1677: rust-random/rand#1677 #1693: rust-random/rand#1693 #1695: rust-random/rand#1695 #1697: rust-random/rand#1697 #1717: rust-random/rand#1717 #1722: rust-random/rand#1722 #1732: rust-random/rand#1732 #1734: rust-random/rand#1734

• acc5f24 Prepare v0.10.0 releases (#1729)
• 95c5165 Add fn rand::make_rng (#1734)
• 146da58 CHANGELOG: add PR links (#1738)
• 8cacd6d README tweaks (#1737)
• 28e3df8 Update chacha20: use ChaChaCore directly; remove bytes_until_reseed field (#1...
• 03db311 Replace fn reseed_and_generate with try_to_reseed
• b14483e Apply inline attr to fn generate
• fda8f74 Remove bytes_until_reseed field
• 213bb3b Bump chacha20 to 0.10.0-rc.11
• 72afe1e Minor tweaks; prepare v0.10.0-rc.9 (#1736)
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