4 releases 8 tags

RSS feed

• v0.1.0 9404f61810

  Compare

  v0.1.0 Stable

  sicher released this 2026-10-06 12:58:37 +02:00 | 328 commits to main since this release

  The first tagged release. lamp is a Scheme for embedding in Zig programs,
  with two ways to run the same source:

  • The VM (lamp, lamp.Session): a register VM with an aarch64 JIT on
    macOS on Apple Silicon. Elsewhere it interprets, which includes Linux; the
    JIT is not ported there yet. Script runner, REPL with
    breakpoints, and a Debug Adapter Protocol server (lamp --dap).
  • The AOT compiler: Scheme to Zig to native code through LLVM, with no
    interpreter in the binary. addSchemeExecutable in build.zig
    cross-compiles like any Zig program. eval, environments and runtime
    load are refused at compile time.
  • R7RS-small: VM 1203/1203, AOT 1198/1198 (the AOT omits eval).
    R5RS: VM 316/316, AOT 314/314 (again the eval tests). The two engines
    agree on a differential corpus.
  • The numeric tower: fixnums that promote to bignums, and exact rationals.
    No complex numbers.
  • Also: hygienic syntax-rules, call/cc and dynamic-wind, proper
    tail calls, full Unicode 16.0, R7RS libraries (define-library, a library
    search path), and docstrings.
  • Embedding: several sessions per process, Zig functions as procedures,
    sandboxed library sets, and native value types that compile to unboxed Zig
    structs.
  • Performance (docs/BENCHMARKS.md, 55 R7RS benchmarks on an M1 Pro): the
    VM is 0.68x Guile 3.0 and 1.84x Chez 10.4. The AOT is 1.22x Chez and 0.45x
    Guile. sum and cpstak are slower under the AOT than before a 2026-09-30
    correctness fix; the guarded fixnum clone that recovers them is the next
    piece of work.
  • Platforms: macOS on Apple Silicon (with the JIT) and Linux on aarch64
    (interpreted; tested in CI from this release on). Requires Zig 0.17.0.

  Downloads

  • Source code (ZIP)
    0 downloads
  • Source code (TAR.GZ)
    0 downloads