Tycho 0.9.2 — pre-1.0, no stability guarantees.

0.9.2 expands the core library to cover the Odin core capability set and adds Android and iOS compiler target gates. This is capability parity, not API parity: Tycho keeps its value semantics, implicit arenas and Result model, so Odin code does not compile unchanged.

Core library

• Compression — PPMd7/PPMd8, PKZIP Shrink/Reduce/Implode, Deflate64, shoco, BCJ2, delta, BCJ filters for x86/ARM/ARM Thumb/ARM64/PowerPC/SPARC/ IA64/RISC-V, and swap2/swap4.
• Encoding and assets — HxA v3 reader/writer, BNG decode/encode, Qt .qm catalogs, locale data and native Lua %b/%f/non-greedy patterns.
• Platform and runtime — leap-second TZif records, epoll/kqueue/IOCP completion loops, deterministic prof sampling with Spall traces, terminal cursor queries and Windows tty fallbacks, thread-local storage and a synchronous OS-thread runner.
• C interop — typed C function-pointer invocation in core:dynlib, and named C-to-Tycho callbacks through compiler-generated C-ABI trampolines.

PPMd and the PKZIP legacy codecs are vendored public-domain C (7-Zip SDK and hwzip). Deflate64 uses zlib's infback9. BNG uses the Unlicense reference codec. The vendored codecs add no runtime library dependency.

Platforms

Prebuilt archives are attached for Linux x86-64, Windows x86-64 and macOS arm64. The macOS archive is built natively on Apple Silicon and smoke-tested there; it is not a cross-compiled binary.

Android and iOS are compiler target gates, not end-user platforms in 0.9.2. make android-check and make ios-check build and run dependency-free corelib tests for those targets; no app archive, APK, Xcode project, JNI binding or signed-device run is shipped.

Known limitations

• C-to-Tycho callbacks accept named functions only. Callback parameters and results are limited to scalars, ptr and void; closures and function values are rejected.
• mem, relative, runtime reflect, raw sys, c, odin, rexcode, SIMD intrinsics and slice remain explicit non-goals.
• Tycho is pre-1.0. The language surface and corelib API may change before 1.0.

Prebuilt archives and checksums are attached to this release.