ModuLisp

Standalone build of the portable uSEQ signal engine. Meson + ninja:

meson setup build && ninja -C build && meson test -C build

Module map

• src/modulisp/lisp/ — header-only symbol interning (symbol_intern.h).
• src/signal_engine/ — the language core:
  • token → cell_store → graph_builder → node_pool: source text to fixed-pool signal DAG (deterministic compile, CSE, bounded diagnostics).
  • compiler_pipeline: parse + graph-mutation transactions (LKG rollback).
  • cold_eval: top-level evaluation — definitions, output assignment, external sink assignment, cold commands, transport control.
  • executor: tick-time DAG execution + publish_sink_values.
  • ext_registry: generic named external-input / external-sink / cold-command registries — the firmware-profile seam (see MAP.md).
  • state_registry, synth_registry, synth_graph, diagnostics.
• src/utils/, src/devtools/, src/ports/ — support libraries, gated telemetry, and hardware port interfaces with host mocks.
• test/ — Catch2 executables over the host subset of the engine.

External registers are generic: firmware registers names like nn/* or midi/* at boot; the engine ships no such builtins.