# V3 step 7 — syslib port (planned, required for self-hosting)

Status: not started.

## Scope

- Rewrite compiler-owned `FileIO` on `SysIO+Storage` only; ban
  gm2-only imports (`Environment, FileSysOp, TextIO, RawIO,
  WholeIO, IOChan, SysClock, ProgramArgs`) from ALL compiler
  sources; `grep` gate in `run_tests.sh` fails the suite on any
  occurrence.
- `runtime/syslib`: `SYSTEM` (ADR/TSIZE/BYTE), `Storage`
  (malloc/free), `SysIO` (open/read/write/argv/exit),
  `SysClock` stub, `Trap`, `Utf8`.
- Stage1 remains gm2-built, but sources are syslib-clean.

## Acceptance (planned)

- Full suite green with syslib-only sources; `grep` gate clean.

## Files (planned)

- `runtime/syslib/*`; ported `compiler/src/FileIO`;
  `bootstrap/stage1/` notes.
- This file filled in on landing.